Bearcat2, can you elaborate on your observations on what you’ve seen as being the best and worst on those long checks?
I'm no expert, so I can just say some of what I've observed. The absolute worst traps on coyote feet that I've seen are not designed for coyotes, those are modified TS85s. They don't damage their intended targets feet, but are terrible on any incidental coyotes. From what I have observed, cast jaws or wide laminated jaws with rounded edges and narrow offsets seem to produce the least damage. You want some offset, if you don't have enough offset to allow decent blood flow the foot will go numb and they may chew on it, also in the colder areas it will freeze if you don't have enough blood flow. Too much offset and the coyote can slide their foot around a little, which will cause damage. This is where the argument between center swiveled and side swiveled emerges, because if the chain is attached to the side of the trap the coyote will pull its foot up tight to the opposite edge of the jaws and not move it any more, whereas a center swiveled trap he can slide it back and forth causing more damage, but a properly offset trap or close jawed, where his foot never slides at all and the center swivel will cause less damage with the straight pull than the side swiveled trap. A big heavy trap can cause more damage with them fighting it, but from my observations some big heavy traps do, and other even bigger, heavier traps do not. If you are trapping where you are targeting or may catch multiple species it is going to be tough to pick the right trap. A couple swivels close to the trap help a lot, swivels on down a long chain don't seem to do a lot, in my experience.