Coaches & Directors

We are here to support your needs. If your questions are related to workouts, meets, events, goal setting, and other swimming related needs, please contact one of the coaches. For all questions related to administrative, such as dues, safety, or policy issues, please contact one of the board members.


Head Coach: Andrew Preston-

Team Co-Directors: Robin Mathers and Marisa Canoles

2019 Coaching Staff

Andrew Preston

Head Coach


I am very pleased and thankful to be a Las Trampas Seahorse. According to the World Register of Marine Species, there are 53 species of seahorses. One objective-of many-this summer will be to gain classification as the 54th species-the fastest species. Seahorses in the wild are not very fast. However, they are very maneuverable-and are able to move up, down, forward, and backward. Other objectives for all LT seahorses include: move up the league top time rankings; down the pool faster than our competition; forward (and toward) each wall with increased speed; and back(ward) toward the finish ahead of the clock (a popped time).

I have coached competitive swimming for twenty years (recreation, USS, high school, and masters), and am confident that I will achieve the goals I've established for myself this 2014 season. These include, but are not limited to, the establishment of an environment in which everyone views themself (and each other) as successful; enjoys being part of practice, and misses practice when not present; and experiences improvements in stroke mechanics, racing skills, time standards, and overall rank.

I have worked with children/young adults as a basketball coach & camp counselor (St. Stephens Parish), general education teacher (full-time substitute MDUSD K-5), special education teacher (mild/moderate learning disabilities K-5, moderate program middle school, severely/emotionally disturbed 6-12), adult education teacher (GED, High School Diploma, Conversational English & Algebra), ESL instructor (Republic of Yemen), and as an instructor for the American Red Cross (CPR & First Aid).

As a competitive swimmer I swam ten years with the Walnut Creek Aquabears where I was a Junior National qualifier. I also was a NCS finalist (top 16) for one year (PHHS), a top eight finalst for two years (YVHS), a state semi-finalist for two years (DVC), and a NCAA Division 2 qualifier (CSU-Chico).

I am currently employed with the Mt. Diablo Unified School District as a teacher of a moderate special education class (grades 6-8). The ability to organize and prioritize information, and to make meaningful social connections is a challenge for many of my students. I was born in Preston, England, have traveled in thirty countries, collect stamps, and am married and have two daughters and a stepson.

Mudskipper Program


Connor Murray

Head Coach, Mudskipper Program

Bio coming soon

Katrina Rynne

Jr. Assistant Coach, Mudskippers

Bio coming soon


Coaching Staff