Doesn't seem to me as if you were the rude one at all. Sounds like he just wanted you to stay the hell out of his way. Shruging it off is, by far, the best bet. I know this is true. I really do, and I dearly wish I better at it but I probably would have stopped and tried to find out just how much of the river the dude actually held clear title to. That's just me but I'm getting better as I get older. Never, never, never let some jerk who thinks he owns the river spoil your day. You gotta look at yourself in the mirror every morning before you go to work.