Do these people fish from sailboats by chance? I realize this guy sounds like a real jackass but some people do make me wonder sometimes. You don't have to blow past people at 70 but the worst thing you can do is drop off plane right as you approach a small boat, nothing sucks worse than those morons in cruisers who come flying up to the beach at about 40 then yank the throttle back right when they pass you.
Throwing someone out of the boat and not stopping on the other hand...sure doesn't make much sense to me. I thought the stereotype was you shoot the guy first then dump him.