My TopspinPro moves around a lot
While your work on topspin you want a fairly vertical swing path initially so it shouldn’t move too much. But sometimes if you’re making contact that’s not quite parallel to the screen you might find after a few strokes the TopspinPro starts to rotate a little. So that can be a useful indicator that you might not be lining up your racket correctly.
But if the TopspinPro is moving a lot then there’s possibly another reason:
Your feedback and opinions are valuable and appreciated.