Lot's of good info.
I think a lot of the "rumors" are just that. People thinking about what might happen. Common sense says water inside waders weighs the same as water outside of the waders. The water won't weigh you down. Maybe all the junk in my vest will though. I agree with the ones that say point your feet down stream. You need to fend yourself off of the rocks and things. Wearing a wading belt is a must! My wife and I always check each other to make sure we are wearing them.