"Flybinder, said that"? true, I posted the LINK, where that was said, but it's not a "quote of mine" and I also, highly disagree with "trapping as much air as possible, in your waders"!
But, as FG pointed out, TRY and "trap air in your waders", as it's nearly impossible, at least in moving water with the force of current pushing all the air out, past the chest belt no matter, HOW tight the belt is.
Sorry, to mislead anyone, I mainly posted that link, in regards to the wading staff info.
Saint Paul-"The Highly Confused"
You cannot do a kindness too soon, for you never know how soon it will be too late.
-- Ralph Waldo Emerson