Looks like most of you have some good advice for dealing with jerk-offs - thanks! But how about some guidlines for fishing friendly with others. If I show up to a popular hole that has 5 or 10 fisherman working it (normally I will move on), what is the 'proper' way to work in and not look like a jerk? If there's just one guy fishing, I usually ask him if he minds if I share the hole. If the river is big enough, I may not ask, but just keep as far away as reasonble. If the stream is smaller, and you rarely spend more than 10 or 15 minutes fishing the same spot, I'll ask which way he is heading (up or down stream) and then go the opposite.

So if there is a group of guys fishing a stretch and they are evenly spaced, and this spot for some reason is your only decent option, what do you do?