18 & Under World 100s
Wisconsin Swimming
Level 4
Excellence 100


Coaching Staff
Brent Boock Head Coach - SI&II Lead Coach

Coach Boock started as a member of the Elmbrook coaching staff in 1993. At Elmbrook he has enjoyed working with hundreds of swimmers striving to reach their full potential including many state champions, zone level swimmers, and national top 16 swimmers. Coach Boock enjoys running, biking, swimming and leading an active life.

Carissa Donkersgoed SIII - Lead Coach

Carissa began coaching in 2014 for EBSC where she swam for 13 years, competing at the state and national level. She swam for Brookfield Central and at UW- La Crosse. Carissa is a teacher and enjoys traveling, working out, and spending time with family and friends.

Claire Flatley S IV Lead Coach

Hello! My name is Claire and I primarily work with the S4 and S3 groups. I swam with EBSC for nine years competing and the state and national level. I graduated from the University of Utah with a degree in Psychology and am now pursuing a Master’s degree in Social Work at UW-Milwaukee. In my free time I like hiking, spending time with family, and playing with my bunnies.

Michael Rose AI&II - Lead Coach

Mike has been with EBSC in various capacities for a LONG time.  As a swimmer (1974-76), coaching round 1 (AG and Senior 1982-86), parent (2003-15), coaching round 2 (AGT 2005-14, AG 2014 to the present). Mike has also coached the high school teams at Brookfield East (Boys 1983 to 1997, Girls 1985 to the present) and a bit at Brookfield Central.  During that time, he has coached many state champions, All American’s and top national club swimmers.  Many of his former swimmers are current EBSC parents!

In addition to coaching Mike taught at Math at Brookfield East from 1993 to 2018 and currently teaches part-time after retiring from East.

Mike is married to Carol (the girls diving coach).  They have 4 kids who all swam for EBSC from novice through Junior Nationals with a couple of 4 year college swimmers.

Margaret Langenhahn TI&II - Lead Coach

Coach Margaret Lotzer is in her 3rd year with EBSC.  She has coached with every group on EBSC except for the AG swimmers.  She graduated from UW-Whitewater and was a part of their swim and dive program for 4 years.  She has a degree in Elementary Education and a minor in Special Education and teaches 5th grade in Franklin, WI.

Kristen Malloy NI&II - Lead Coach

Kristen began coaching for EBSC in 2005.  She swam for Elmbrook, Brookfield Central High School, and St. Norbert College.  Kristen is a Title I math and reading teacher at Eastbrook Academy in Milwaukee.  She is married and has two children, Jonathan and Samantha.


Daniel Westfahl NI & II - Lead Coach

Danny Westfahl returns to the Elmbrook Swim Club to coach the novice team. Danny is a lifelong fan of the sport of swimming, having competed in the backstroke events in high school and college, and previously coaching with EBSC from 1993 to 2009. Danny is currently a first grade teacher in Fox Point, and the proud father of Marquette freshman Maddie, Hamilton high school junior Livie, and Templeton Middle School 7th grader (and senior 4 swimmer!) Mollie. In his free time, Danny loves reading, Star Wars, and spending time with his wife Deb, golden retriever Georgia, and fluffy cat Starbuck.  

Tracey Plate S III - Assistant Coach

Tracey has been with the swim club in different capacities since 2011 when the oldest of her two daughters joined the club.  She is an assistant coach for the Senior 3 level training group. She currently works at Burleigh Elementary as a certified health room assistant. Tracey enjoys the outdoors with her husband Jeff and the girls, hiking, biking and camping.  Not only does she want to help your  athletes become better swimmers, she also hopes to instill the benefits of continuing with an active lifestyle for a lifetime.

Anne Leupold AI&II - Assistant Coach

Anne is an elementary teacher and currently teaches 4th grade at St. Margaret Mary School in Milwaukee.  She swam for EBSC competitively from age seven through her senior year of high school.   She graduated from Brookfield East High School and swam on the Varsity team for all four years.   In college, she swam on the UW-Whitewater swim and dive team for four years, ending her career as a senior captain for the team in 2013. She also was a lifeguard and swim lesson supervisor at the Wiberg Aquatic Center. She has been coaching for Elmbrook for about 7 years, primarily working with the Age Group team. On her off time, Anne enjoys spending time with her family and friends, reading, or catching up on her favorite shows! 

Van Donkersgoed Assistant Coach

My name is Van Donkersgoed. I grew up in Minnesota, swimming for Aquajets Swim Team from the ages of 11-18. I went on to swim collegiately at Northwestern University in Evanston, Illinois, where I was the team captain for two seasons. My last season of college, due to injury, I was the volunteer assistant coach for the Men's program. I graduated Northwestern with a degree in social policy and legal studies. After graduation I moved to Milwaukee. I have been with Elmbrook for three years. I am pursuing a law degree at Marquette University and will graduate in May of 2020. In my free time I enjoy traveling, reading, volunteering for USA Swimming, and golf. I still swim masters on occasion, too. 

Lindsay Golla Assistant Coach

Coach Lindsay began coaching for Elmbrook in 2020. She is a former Elmbrook and Brookfield East swimmer, who swam for Coach Brent, Coach Mike, and Coach Fred. Now, she has the privilege of coaching Novice and AGT swimmers. Lindsay works in digital advertising, is married, and recently had her first child!

Alexia Monty Assistant Coach

I am excited to be working with Novice and AGT. I started swimming at the age of 5, for New London Aquatics club. Then moved to Appleton and swam for Fox Cities YMCA from ages 10-18. In high school I swam for Appleton North.  From there I went and swam for a year at Delta State, in Mississippi. I redshirted my second year due to injury and transferred to St. Cloud State, in Minnesota. I swam for their program for my final three years of school and graduated in 2021 with a degree in Biomedical Science. Now I am in Pharmacy school at Medical College of Wisconsin going for my Doctor of Pharmacy. In my free time I continue to swim, for EBSCs master’s program and spend any extra time reading.

Mandie Siehs Assistant Coach
Hello everyone! My name is Mandie Siehs, I recently graduated from UWM with a degree in Marketing. I started synchronized swimming when I was nine years old and then at age 11 switched to "regular" swimming. I fell in love with the sport then and have swam on multiple swim clubs around the area including Menomonee Falls Swim Club, Elmbrook Swim Club, and Ozaukee Aquatics. I also swam for Menomonee Falls High School for all four years and then made the choice to swim in college. For my freshman year I went to/swam for Boise State University, but soon after that I made a decision to transfer back home to UWMilwaukee where I finished my collegiate career of swimming. In my time at UWM I managed to break a couple sprint freestyle records as well as multiple relay records, as well as achieve a lifelong goal I realized at the age of 11, qualify and compete at the 2016 Olympic Trials. 
Dwight Sanvold Dryland Coach

For the past 35 years, Dwight has had the opportunity to impact lives in the coaching, performance training and sports medicine fields. This includes 12 years as a Licensed Athletic Trainer working with shoulders, backs, knees and hips. He also spent many years as a program director and swim coach. Twelve years ago, he started his own company FAST- Fitness and Sports Training LLC.  He coaches endurance athletes, teaches group strength and performance classes for high school runners, and coaches EBSC’s dryland program. 

As an athlete, Dwight played college football and ran track. He qualified for the Boston Marathon 4 times and competed at the Ironman World Championships 3 times.  He has been married to his wife Janet for 32 years and they have 3 sons.  Caleb swam at UWM and was Team Captain, Russell ran 5 years for the Badgers running on 3 Big Ten Championship Teams, and Cole is a freshman at Princeton where he is running cross country and track.