Ed,
As you may have guessed, I have one of these, also. They seem like an incredibly good idea, and of course the guys over at BPL have torture-tested them. I did use the 50L dry bag on my sheep trip, in the center of my Mystery Ranch Crew Cab. It worked great. Of course it's not designed for carrying a meat load away from a kill, but for an ultralight pack, carrying ultralight gear in rainy weather, it's unbeatable. Unfortunately (on so many levels) we here in Georgia are in an epic drought. I think I'm going to play around with mine after deer season.
Don

Last edited by docdb; 11/05/07.