A lot of my drags have a wolf swivel attaching the chain to the drag, because I had them laying around and I needed to attach the chain to the drag somehow. And I don't like the big wolf swivels next to a trap to bed underneath it, even on wolf traps that come with them I have been replacing with welded crunch proof swivels. But in my opinion swivels more than three or four feet from the trap are unnecessary, that chain is usually tangled around brush anyways.