There are a lot of different way to do it. Personally, I don't use a metal nock. I tie my own on. You can adjust nock just twisting it. It sure makes things easier when you are tuning, no need to uncrimp, and recrimp anything. Tie ons are also lighter. Plus, it will not wear on anything. If you need info on how to tie them on, let me know, anyone can do it.

Anyway back to the question, I put a tie on nock above and below the arrow, I put the string loop on the outside of each nock. I shoot a 37" A to A, and have a 32" draw, so this method eliminates most of the arrow pinch for me.