The hides can generally be sold carcass or green, but I have found the buyer will sometimes pay a little more for skun, and even more for stretched. With rats it takes about5 minutes to skin, flesh and stretch, so depended on your buyer and your catch, it would probably be worth your time. Beaver are a little harder... but once you get the hang of it you can skin it in a very short time--10 minutes or less, but fleshing a prime one can take a while even if you "clean skin" it. In my opinion, with coonsyou are just better off selling carcass.