Pocket wisdom and stream sense
Put your cell phone and camera in waterproof ziplock bags before you stick them in your vest pocket.
Zip your vest pockets back up after you open them.
Everybody catches their flies in tree branches, even Lefty. Don't feel like an idiot when you do.
Don't crowd someone else who's already on the water.
Before you step out into the middle of the current, fish the water you're going to wade through. The fish might be tight up against the near bank rather than the far one.