I just got some new arrows last week, bare shafted them to "close" and not quite and tuned as I usually do, but i went with it anyway. I shot a tourney this weekend and the arrows, for the most part, hit center, but I did notice some waving "good bye" when they left.
I know when an arrow hits weak, most strike plate out, when the arrow hits stiff, add point weight, etc.
But never had any that waved good bye and hit dead center when I know it was a good release..