There are a lot of little ways people develop for doing their tackle. I can't however think of any good reason for having nocks and a loop. The people who did the slow mo on this system don't recomend any nocking point. You just add weight, and increase the stress on the serving, and add nock pinch to a system that was desinged to eliminate it. Not sure I see the point. I shoot both big and small nocks out of the same loop position, and go back and force. One would thing that would make for haywire results, but it doesn't seem to mater.