WOW!!!....It's getting to be like war out there.....I have the same problems with disrespectable pleasure kayakers at one of the spots I fish....They go by you literally 40 feet away like you are invisible ,right in line where you are casting, and then when you say something they get all defensive....The freaking lake is 500 acres!!!!...Is there really a need to drive that close you morons!!!....... .....Time to get the Megaphone on the boat and start giving warning before I start chucking sh*t at them as well.....I can totally relate to what you went through....