You win for now... I'll go get my 90 year old neighbor and teach him about the internet and then he can post to beat everyone . Look, I am trying to lighten the mood because it has gotten a little out of hand here and the lake is a very fun place.
The idiot on the waverunner needs to face consequences but we cannot allow ourselves to get so mad that it makes us irrational. Also, per my earlier post, most people will stop acting like an idiot if you kindly point out that what they are doing is not correct. This guy was probably drunk and mad so it would not work in this situation but in most it will. This also has the side benefit of teaching someone the correct way to operate a vessel and could possibly save a life later if they think about what to do and not. If they are screamed and cussed at then the natural human reaction is to fight back. This gets people into more trouble. Long paragraph to basically say "be kind".