I too have never bare shaft tuned. But I plan to give it a try the one ? I have is how do you know which way to move the rest? Do you do it by watching the arrow in flight or by the angle it sticks in the target. The only tuning I do is paper then if I am shooting pretty good groups I leave it alone. Thats not saying the tune is perfect but close enough IMO. Also I don't see how a bare shaft should impact the same as a fletched one because the FOC, arrow weight and spine should have an effect on a non fletched shaft then when you fletch them it all should change again? I am I on track with my thinking?