Good point on being able to cut the loop off and retie when needed, and one we often neglect to mention. Case in point... I tied the one below just a smidgeon too short; my release head just barely fits in behind the nock without making contact, and I don't feel comfortable leaving such little hookup room while on stand as I'm watching a deer approach... This pic demonstrates how short of a loop you can get using this method, though. I'll be retying this one later -- but with the nocksets already in place, it'll take just a couple minutes.
