RE: release question
Are you thinking of going to a string loop, or already have one? The reason I ask is that I have read that adding a loop after the fact can affect your draw length and/or anchor point etc. Not sure how important that all is, I don't use one.
I only hunt, and I shoot right off the string with a caliper type release (both jaws move), and a head that rotates 360 degrees. I also happen to use those rubber "eliminator buttons" to help with any possible noc pinch with my release.
My string/serving does fine without any excessive wear... and don't feel a loop is "necessary" per se. I guess it is all personal preference.
Take care.