I am not sure if I qualify. Quite a few years ago I was backpacking on Isle Royale in Lake Superior. The lake never gets above about 50°. I had been out for several days and was getting pretty ripe so I thought that I would just go into the lake, clothes and all and get myself and my clothes clean at the same time. I made it about up to the top of my thighs and decided that I just was not that dirty. There was a ranger watching and he got a real kick out of that. The point is that I may not be a real backpacker because I never went in all the way.