I just bought a kayak. Got it so I can take it with me when I go out to Lake Powell in a couple weeks and do some exploring where normal boats don't go. I have never had problems with any of the yakkers near where I ride- I stay away from them, cause I know that some of them are unstable and can flip over with small waves/wakes.
I hate the lazy fishermen who sit right in the channel marker areas...a channel marker is like an imaginary highway curb- stay out of it if you want to sit and pull your pud, stay in it if you are motoring from point A to point B. Then they glare at you like you are doing something wrong. Anglers (the small boat/john boat/stick-to-the-shore guys) are by far the nastiest bunch out there toward jetskiiers. They get all torqued up on Bud or Natty Light all day and think their sh** doesnt stink.