Rob, I hear you and as you know I am a fisherman, pretty crappy one , but I try. It is really crazy what these guy do, I really don't get it, actually I do, they are fishing where the fish are (maybe thats one of many reasons I am a crappy fisherman). But heres the deal, you know your not suppose to be there, so WTF with fliping the bird, IMO it adds insult to injury to do that.
I try like hell to deal with this stuff in a civil matter, but like you, I some times lose it, When I lose it there are no words or looks, I just lower my speed so my boat is squating and throw him the biggest wake I can, then I watch and laugh when I swamp him.
I do this at the bridges, and going through Moriches, In other areas like the State Channel (where there is plenty of room and water) I actually slow down and work around them. When I was coming home from Cedar last week, there was a boater drifting the State Channel, so being the nice guy I am I moved away from him which put me on the wrong side of the channel, a small boat was heading my way and was pissed and not moving his course (because I was on the wrong side of the channel). He was able to see what I did and why I was where I was, but he had that FU attitude. So as he passed me within inches, I squated the boat and rocked his world

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Could this be called Boat Rage
Walter