Coaching Staff

Jim Warren - Club Director

Jim has been the Club Director and Coach of the Waves since its inception in 2003. He has over 20 years coaching experience, including 4 years with the Stingrays Swim Club. Jim also coaches the Middle and Upper School teams at Viewpoint School.

Greg Bisheff

Greg has been with the Waves since 2012 and ​coaches the Tadpoles, Minnows, Jr Waves, and Waves. After swimming with for Irvine Novaquatics for 6 years, Greg graduated from Woodbridge High School in Irvine and swam at UC San Diego. Greg has been coaching for 20 years and is also the Head Coach of Viewpoint Swimming.

Briggitte Kroetz

Briggitte is in her second year coaching the Waves. After competing for the Porter Valley and Rattler Swim Clubs for 8 years, Briggitte joined the Pierce College Swim and Water Polo teams. Prior to joining the Waves, she coached at Guardian Angels Aquatics and CCAT Swim Club for 3 and a half years. Briggitte also coaches the Viewpoint School Middle and Upper School Swim Teams. 

Paige Lathrope

Paige is in her third-year coaching the Calabasas Waves. She grew up in Northern California, swimming from the age of 13 for the Sierra Marlins Swim Team in Folsom, CA. After high school, Paige swam at UCLA for 4 years, competing in breaststroke, IM, and freestyle. Paige was a Western Zone champion, high school All-American, and Senior Nationals qualifier. Paige teaches in Viewpoint’s Lower School and also coaches the Viewpoint School Upper School Swim Team.

Garrett Mangieri

Garrett is the Waves Gold coach. After attending Mercersburg Academy in Pennsylvania, where he was the Prep School National Champion in the 100 freestyle for 1998, Garrett attended The University of Michigan, where he swam under Olympic Coach Jon Urbanchek for 4 years. Garrett qualified for the Olympic Trials in 4 events, was a 4-time 1st team All-American, and 2-time Big Ten Conference Champion. Garrett started his coaching career with the Royal Swim Team, where he coached for 4 years.

Deborah Hefter

Deborah is currently the Pool Director, South West Aquatic Masters Coach, and a Kinesiology Instructor at Los Angeles Pierce College. Deborah swam competitively at Cleveland High School, where she was a CIF Champion, then she an All-American at Pierce College before finishing her career competing for California State University, Northridge. Deborah brings a wealth of coaching experience and an abundance of energy to the pool.