Coyotes are varmints and treated as such: left for other varmints to chew on. The hides aren't worth much. I tend to leave them where they lie, drag them near the road so the rancher whose land I am on knows I wasn't out just screwing around, or throw them in the back of the truck, show them to the rancher in person so he knows I am doing him a favor and not out just screwing around and then dump them off in a ditch later.