I usually shoot through paper to check nocking point height. Other than that, it can be useful to see if somehting weird is going on like an arrow hitting a rest, hand torque, poor spine, cam timing or another problem. In my opinion, it has no place in determining final positon of nocking point and rest windage. Group tuning at long distances is best for that. I use to occassionally spine test with bare shaft tuning, but since I've started using a homemade spine tester, I've found bareshaft tuning to be unnecessary.