I have idea of the simple race that I want to run here. I have been looking for device to run it but can't not find any. Maybe that is idea also for you for a new racing set ? My concept is based on lap timer. Competitor hot start timer by approaching starting buoys or crossing the line between 2 buoys. Then timer starts. Then competitor do lap to upper buoy gybe and come back to starting buoy that stops the timer. Alternatively competitor needs to complete 2 or more laps then timer stops. Whole competition set consist then of the starting buoy to activate the timer and waterproof timer. If timer is equip with GPS then even better. If timer could transmit data/ results wireless when lap is completed then next big advantage. I bought some electronic components to build a prototype and test. PM anybody if want to discuss further or join forces/ cooperate