I use a pair of aluminim and neoprene-like-stuff guys. They are in a box until I get them out for the winter- they were a prize in a raffle, so I can never remember the brand. <img src="/images/graemlins/blush.gif" alt="" /> I'm just glad they had some that fit a, uhm, "full sized gentleman", to coin a euphamism. I'm right at the limit of what my shoes should be used for, maybe a little over, and not in the best shape, so I'm working more than most people are. As a result, I sweat a little. :P

As for a sled, I like them, but only in open country. Get into forests, and off the trails, you want the pack. I don't carry much, just my normal EDC, a real knife, a sidearm, and a small pack "uh-oh" items and a sleeping bag.