RE: Bare shaft tuning
All of these points are correct and good advice, all of this would depend if your arrow rest is properly set up. I like to paper tune and finish up with a bare shaft tune to make minor final adjustments to my arrow rest. And it is correct, it all depends on how anal that you want to be. When I am finished. My bare shafts will hit in the exact spot as my fletched arrows at 30 yards. This shows me that the fletches are only stabilizing the arrow and not correcting it. This will give you less arrow drop as the fletches are digging into the air less. I shoot in the HC at the IBO shoots and do everything I can to flatten my trajectory and increase my accuracy. Even the small things add up. I also turn my limb bolts until I get the optimum groups. When doing this you are adjusting the tiller on the limbs. Even tiller on the limbs is a good place to start. I have seen some bows shoot their best with one bolt a full turn different on each limb though. Good luck.