Manta Ray Partners
Coaching Staff



Coaching Staff

Ken Heis

Head Coach - ASCA Level 5


The City of Mason hired Ken Heis in the fall of 2003 to start the Mason Manta Ray program.  Ken has been coaching for over twenty years and has coached 30 Olympic Trial Qualifiers, 50+ Ohio High School State Champions, Sectional Champions, four National Junior Team members, and Top 10 in the nation swimmers. He is the High Performance group coach and assists on all levels of the team. 

The Manta Ray boys won the USA Summer Junior Nationals back to back years 2017 & 2018 & won the 2017 & 2018 USA Winter Junior Nationals, and the girls won the 2017 & 2018 ISCA Junior National Cup. In 2018, the Mason Manta Rays won the combined team title at USA Swimming's Winter Junior Nationals. In 2019, the team placed 3rd at Winter and Summer Junior Nationals. Ken was selected to coach at the 2018 USA National Junior Team Camp in Colorado Springs, lead the 2019 Team USA Mare Nostrum team in Spain & France, and be an assistant Team USA coach at the 2019 FINA World Junior Championships in Budapest.  Heis was also selected to take part in the United States Olympic Committee Coach Leadership Program.  Ken has been awarded the 2007, 2008, 2017, 2018, & 2019 Ohio Swimming Coach of the Year and was awarded SwimSwam USA Club Coach of the Year - Honorable Mention in 2020.  

Prior to Mason, he was the head coach of the Aiken-Augusta Swim League in Augusta, GA for three years. Before Augusta, Ken was an assistant coach at Clemson University and head coach of the Anderson Swim Team in Anderson, SC.  He is an American Swimming Coaches Association (ASCA) Level 5 Certified Coach and currently serves on the ASCA Board of Directors. He as also served on the Central Zone Senior Sectional committee and Ohio Senior Committee. 

Ken graduated with a degree in Economics from Kenyon College and is from Cincinnati. As a swimmer, Ken was a three-time Ohio High School State qualifier (Turpin HS), a 22 time All-American, Olympic Trials qualifier, NCAA D-III National Record Holder, 16 time National Champion and has been inducted to the Kenyon College Athletic Hall of Fame.  He resides in Terrace Park with his wife, Jeni, sons Quinn (14) and Corbin (11), and daughter Rorie (6).

Trish Schoenlein

Head Age Group Coach - C1/D2/D1


I grew up in the Cincinnati area, attending Sycamore schools.  I started swimming for the Flying Fish when I was 8 and continued through high school where I was an All-American swimmer and Jr. National Qualifier.  I attended Bowling Green State University where I was a four year scholarship swimmer. I have a Bachelor of Science in Technology with a degree in Visual Communications Technology.

Due to the love of the sport, I started coaching with the Sycamore Flying Fish upon college graduation assisting with the various groups, 14 & under before settling into the lead coach of the 8 & under age group.  I started with the Mason Manta Rays in the spring of 2009, working with 9 & under and 11-14 year old swimmers. 

I have always enjoyed working with children and have a special place in my heart for children with needs.  I was a para professional at Mason City schools for 8 years in specialized classrooms for 2nd - 6th grade students with moderate to severe autism.

I resided in Mason since 2003 with my husband and three daughters. We have all been a part of the Mason Manta Family.  All 3 of our daughters were Rays swimmes and my husband is a Rays official. 

Logan Schaefer

Head Age Group Coach / Senior 1


Logan began coaching with the Manta Rays in the fall of 2021.

Prior to Mason, he was the head coach of Donner Swim Club and Columbus North High School girls & boys swimming and diving in Columbus, IN. As head coach of the Bullfrogs, Logan guided the program to 6 top 26 team finishes at the IHSAA State Finals, one Sectional Team Championship, developed multiple state medalists and NISCA All-Americans, and was named Sectional & Conference coach of the year twice.

As head coach of Donner Swim Club, Schaefer developed junior and senior national qualifiers and guided 5 athletes to Division 1 collegiate programs. With Donner, he was selected to serve as Head Coach the 2017 Indiana Swimming Age Group Elite Camp, Assistant Coach of the 2018 Indiana Swimming Senior Development Camp, and Assistant Coach of the 2016 Indiana Swimming Age Group Elite Camp.

Logan graduated from Indiana University with a major in Kinesiology and a minor in Psychology. While at Indiana, Logan competed for the Hoosiers for 1 season and then transitioned into a student-volunteer coach for the next 3 seasons. As a volunteer coach he was selected as a personal coach of the USA Swimming National for 2014/15 & 2015/16 and helped develop several NCAA All-Americans and B1G Conference Champions.

Logan enjoys spending time with his family, being outdoors, archery, fishing, talking about sports, and gaming with friends. Logan is an Indianapolis Colts & Indiana Pacers fan.

Logan currently resides in Cincinnati with his wife, Lindsay, son Liam (4 mo.) and cat Daryl.

Katie Schmidt

Challenge 2 - ASCA Level 2


Katie began coaching with the Manta Rays in the fall of 2010.  She started out coaching ages 4-18 for the Windwood Swim and Tennis Club in the Summers 2004-2008.  After graduating from the University of Evansville, Katie stayed as the assistant swim coach for the Purple Aces for the 2007-2008 season.  She then returned to Cincinnati and coached with Cincinnati Aquatic Club for 2 years before joining the Manta Rays coaching staff in 2010. Katie is the lead coach of the Challenge 2 group and also acts as the registration liason for the team.

Katie grew up in Cincinnati and competed for the Blue Ash YMCA and Lakota West High School before earning her scholarship to swim for the University of Evansville Purple Aces.   At Evansville, Katie competed all four years and earned her Bachelor of Science degree in Elementary Education.

Katie currently resides in West Chester with her husband Mike, her son Reed and their black lab Sadie.  Katie completed the Haine's City Florida Ironman 70.3 and Louisville IRONMAN in 2015.

Todd Billhimer

Assistant Coach - ASCA Level 4


Todd joined the Manta Rays in the fall of 2004. He started his coaching career in 1991 as an assistant for the Milford Area Swim Team (MAST). In 1993, he accepted the Head Age Group Coach position for MAST and helped build the team from 60 swimmers to 125 swimmers. While at MAST, he coached his swimmers to National Top 16 rankings. In 1998, Todd accepted the Head Coach position at the Clermont YMCA where he also served as Aquatics Supervisor. While at Clermont, Todd coached Ohio High School State qualifiers and top 8 finishers, as well as YMCA National qualifiers and top 8 finishers. He also coached his first High School All-American while at the YMCA. In 2000, Todd left the YMCA and took the Assistant Head Coach position with the Northern Kentucky Clippers. There, he worked with swimmers 13 years and older with a focus on the distance swimmers. While with the Clippers, Todd helped coach Ohio and Kentucky High School state qualifiers and champions, numerous Top 16 swimmers, Ohio Age Group State champions, Sectional champions and Senior National qualifiers.

Todd was a member of the first swimming and water polo teams at Milford High School. He graduated from Northern Kentucky University with a B.A. in Political Science in 1998. He is currently an ASCA Certified Level 4 coach and has served as the chair of Ohio Swimming's Age Group Committee, Technical Planning Chair, and is currently serving as General Chair for Ohio Swimming. In his free time, Todd enjoys spending time with his family and playing or watching sports. He resides in Batavia with his wife Katie, daughters Josie, Jossalyn, and Juliana . Todd currently coaches the Senior Prep Group.

Emilie C Hoeper

High Performance Assistant Coach


Mark Davis

Senior 2 & Senior 3


Amy Robillard

Assistant Coach


Coach Amy started her swimming career through summer league at 6 years old in Atlanta and never looked back. From there she started swimming competitively year round at 10 years old in St. Louis and Dallas, then swam for University of Arizona.  

She has coached all age groups from the 6&u through High School. Every age has its own unique set of challenges and rewards that keeps coaching exciting. 

Amy has been coaching with the Manta Rays since 2015 and has been a Team Ohio Zone coach (‘16-‘17-‘18). 

Mark Sullivan

High Performance


Mark is an assistant coach with the High Performance Group as well as the head coach of the Mason High School Swim Team. Born and raised in Akron, Mark graduated from Eastern Kentucky University in 1980.  He coached in the Youngstown area for three years, then moved on to coach St. Xavier High School from 1983-1988.  He then moved onto Sycamore High School where he was the head High School Coach for 15 years & led the girl’s team to a State Championship in 1992.  He moved onto the Mason School District in the fall of 2003. Mark is a retired Physical Education teacher. Mark and his wife Jackie have 4 four grown children and 3 grandchildren. They reside in the Mason.

McKinley Davis

Assistant Coach


Senior 2/3

Ashley Lammers

Imagination 1 and Senior 1&2


Carrie Preissler

Assistant Coach


Carrie started her swimming career at the age of 6 and swam competitively for Countryside YMCA, Blue Ash YMCA, Normandy Swim Club, and Mt. Notre Dame High School.  After graduating from Bowling Green State University, Carrie taught in Cincinnati Public and Lakota Schools and coached for Sycamore High School, Normandy Swim Club, and Kenwood Country Club.   
This is Carrie's fifth year coaching for the Manta Rays and she helps coach the Discovery Groups.
Carrie is also a preschool teacher.  Carrie lives in Symmes Township with her husband Mike and their three children who all swim for the Manta Rays. 

Sabrina Manning

Imagination 2 Coach


Heather D Shooner

Imagination 2 Coach


Heather began her swimming career at age 4 in Pennsylvania. At age 7, when her family moved to West Chester, OH, Heather continued her swimming career with both Lakota Hills and Countryside YMCA. While at CY, she enjoyed competing at both the Short Course and Long Course National Championships, especially the year they won the National title. Heather also represented Lakota High School and was a four time state qualifier in the 500 free. She graduated from Xavier University in 1999 with a Bachelor's in Social Work.
Heather began teaching swim lessons to children of all ages and abilities in 1993 and is proficient in the YMCA, Red Cross, and SwimAmerica programs. She began coaching the Manta Rays in 2012 and has enjoyed working with the 8-11 age group immensely. 
In her spare time, Heather enjoys cooking, road trips, music, entertaining, and reading. She resides in Liberty Township with her husband Joe, and two children, Levi and Audrey. 

Debby Newman



  Debby grew up in Portsmouth, Ohio, swimming with the Shawnee Aquatic Club. She attended Asbury University, as a dual sport athlete in tennis and swimming. She was an NAIA National qualifier while swimming at Asbury University. Over the last 20+ years, she has coached with USA Swim Clubs, Summer Teams  and YMCA Teams in Ohio, Kentucky and Tennessee. Debby coaches the Exploration group and assists with Imagination 1. She is also the Head Swim Coach for the Rec Rays Summer Swim Team. 



Grace Hoffmann

Assistant Coach


Coach Grace started her swimming career through summer league at age 4. She swam competitively throughout her childhood for the WTRC Sharks in Dayton, OH and swam at Miami University. She graduated with a degree in marketing and currently works in sales.

Coach Grace is an assistant coach for the Challenge 2 group and assists wherever is else needed. She’s very excited to be back on the pool deck and can’t wait for a great season!

Kristen L Barbiere

Assistant Coach


Kristen began swimming as an 8 and under in Indiana. She swam competitively thoughout her childhood and continued to swim in college at Indiana University.  While on the team, the women went on to win 3 consecutive Big Ten Championsips.  She graduated with a degree in Elementary Education and became a teacher. Kristen moved to Cincinnati to be with her husband and fellow Hoosier swimmer, Jim, who is from the area in 2016. She has taught for 8 years and is currently taking a break to be at home with her kids. 

Kristen began coaching at Bloomington Swim Club as a senior in college in 2012 and has been involvoed with coaching ever since. While in Indianapolis, she worked with Fishers Swim Team and Carmel Swim Club. She coaches the Hyde Park Hydros summer swim league.

Cecil M Miquiabas

Assistant Coach


Cecil grew up in the southern Philippines, in a city popular with public swimming pools along the beach and beautiful waterfalls. He swam in high school and college while earning a bachelor’s degree in Mechanical Engineering.

Began coaching right after collage as he started in 1990 the Iligan Amateur Swimming Association - a small swim team of less than 50 swimmers. Coached 30+ swimmers that won medals and set national records in the Philippine national age group, open, school swimming championships as well as para swimming championships where 17 swimmers including 5 para-swimmers have represented Team Philippines in several South-East and Asia-Pacific regional championships including the Arafura Games and Pacific School Games in Australia. He was selected twice representing Team Philippines as delegation head coach and eight times as an assistant coach.

Cecil was also selected to be in a coach mentoring program: with the head swim coach and sport scientist Buddy Portier at Victoria Institute of Sports for 10 weeks in Melbourne, Australia; Japanese Olympic coach Ryuzu Ishikawa for 9 weeks in Iligan City, Philippines; and Chinese coaches for 3 weeks in Naning City Sports Center in Nanning City, China.

When his family migrated here in the US in 2007, he immediately continued his passion for coaching by working with 14 and under swimmers as site lead coach at Mercy Healthplex Sea Wolves-Fairfield (until the pandemic shuts down the site in early 2020). He has coached swimmers to the USA Swimming Central Zones Championships as well as consistently placing swimmers in the top finals in every Ohio JO Swimming Championships. He was also the head swim coach of Mercy-McAuley high school (2019-2020). Cecil has two children, Mikka and Kyle, who were both former competitive swimmers and waterpolo players.

Cecil is also an ASCA life plus member and enjoyed attending the annual ASCA World Swim Coaches Conference.

Angela Renee Trujillo

Assistant Coach


Angie started swimming for a summer swim team in Northern Indiana at the age of 6. She continued on to swim year round for the Michiana Marlins next. She completed her competitive swimming after 4 years at Purdue University. She has coached many ages over the years and has recently returned to the pool deck with the Mason Manta Rays. 

Jeff Blume

Volunteer Assistant Coach


Taylor Ann Muia

Assistant Coach


Coach Taylor joined the Manta Rays this year. She started her coaching career at the Lakota YMCA as an assistant coach for the Junior and Junior Plus groups. Last summer, she accepted the Head Coach position at Lakota Hills Swim Club. She has experience coaching all age groups and truly enjoys working with kids. 

Coach Taylor has been a swimmer since she was 4 years old. She started her swimming career at Lakota Hills Swim Club. She also swam for the GMVY Wahoos and Lakota West High School. She attended and graduated from Miami University with a B.A. in Early Childhood Education in 2018. Now, she is a Third Grade Language Arts teacher at Maple Dale Elementry in the Sycamore School District. 

When she is not coaching, Coach Taylor enjoys running, swimming, and spending time with her family. She is very excited to be a part of the Mason Manta Rays!   She is currently working with the Exploration group and the Imagination 1 and 2 groups. 

Go Rays!