I don't like know it alls or loudmouths (not mutually exclusive: sometimes the loudmouths don't know anything at all). Control freaks bum me out too. I like the shirt "Shut Up and Dive!" I'll go wherever the boat goes, and dive wherever the majority of divers want without comment (unless its my last day of a trip and haven't been able to get to a particular site I really wanted to do, then I'll ask nicely and give way if there are too many objections; contrary to my board persona, I don't like to argue...ha!). I don't like people that take too many risks thinking "well, there's that dive instructor that will save my azz if I get in trouble" because you know what? I'm not going to risk my own life to try to save some Evel Knievel...Now that I quit smoking for a while, I don't like smokers on the boat (sorry, but when I smoked, I aksed if anyone minded, and even if it was just one person who preferred I not, I let it go and didn't have one unless I could try to go way downwind with their consent)...I'm not going with hunters (which is usually a special trip so if you sign up on a "hunters" trip, well, you have to go with it)...photogs that handle the merchandise and block out everyone and silt up the joint to get one picture...really out of shape divers is another pet peeve of mine...other than that, I'm easy...heh-heh....