I have had a fish come off and got the rig back only to find the fly leader jammed in the crotch of the treble. After that we checked a "bite off" leader that was on the dash and the end of the leader had a curve to it that fit the wire size of the hook. I don't know how they manage to do it, but they do! If you put the treble in a piece of wood and pull a piece of 50# leader into the crotch of the hook , it cuts it quite nicely. We take a small piece of line and tie it to one of the hook bends and weave it in and out to fill the crotch of the hook . Then tie it off to the hook bend again. Haven't had a "bite off " in many years. This happens with the cutbait heads too. It would be nice to see a vidio showing how they manage to hit the fly and tangle the line up.