Mine is when they show up late or want to bring everyone in his family, or not offer to help pay for fuel. Even when you give them the nights catch to take home!
My wife is my main fishing and hunting buddy----pretty damn good at the catfishing and not too bad of a shot.I fish alone or with my wife. Lost a few partners when they were late and I was already on the water when they were ready to go. Had one who refused to take his fish off or bait his own hook. I about threw him overboard. One who never bought bait and when I asked him if he was going to he said i'll just share yours. One I offered to give the fish to and he answered when my wife got them cooked he would bring the family over for dinner. One who wanted to go home when I caught several fish and he hadn't caught any. I got so agravated at him I took him to the landing put him out and called his wife to come get him. Never saw him again for quiet a while. Hoot was the only really pleasurable fishing partner I ever had besids my wife.