Cabelas has boot hangers for something like 5 or 6 bucks. That's what I use. I used to hang mine by the straps, but the waders stay "open" when I use the boot hangers as opposed to hanging them by the straps, and dry inside much faster.
http://www.cabelas.com/cabelas/en/templ ... &noImage=0
http://www.cabelas.com/cabelas/en/templ ... &noImage=0