I think it’d kick ass if there was some sort of anchored pad you could put on the side of the pool that had a digital display. As you do a flip turn and push off of this thing, it triggers a counter and counts your number. Have it in 1x1 foot high numbers and probably needs to go up to 999 (for those going over 100 laps)
I’ve thought about this kind of thing as well - I’ll go one better: have it give you a print out or file of your sets/times when you are done.
Anybody got time to work on this? Engineers? Bunnyman?