The problem I would have with using a commercial swivelling loop like that is that the swivel doesn't tighten up. The SAS Survival Guide recommends a slip knot on a slip knot; essentially (IIRC) you take one end of the wire and fasten it to the main line with a lark's head knot to form the loop. As the animal struggles to get free, it not only pulls the main loop tight, it also tightens up the lark's head knot so the loop will not come loose.<br><br>It sounds logical to me, but I've never tested it in practice; does anyone here have any more informed opinions about it?
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