I do wonder if you are targetting the right audience on this forum. Most of the folks here are old enough to have been responsible for voting Maggie Thatcher into power
and therefore never going to under take anything as dangerous as Zap Cat racing, instead we much prefer to watch and make comments like "oooh, ouch, that must have hurt"
What you need to do is poach someone from another sport involving agility and complete lack of fear. Suggest, wind surfing, rock climbing or parachuting type forums might find someone suitably certified. Afterall they don't need to know anything about racing, just own a wet suit and have a desire to live by staying in the boat.