I'm at work and don't have time to check Allens page. I'm tapatalkig. But youre right about the tails I cut my tails off after I hang a couple times and am sure to bob up and down some lol.
The ideal thing to do would be to pull them to whatever the highest possible weight before they would break. Once that's done the knot has tightened as much as it can and the tails will no longer shrink.