In the video above, Titleist staff instructor Trillium Rose tells us that the position of your club at the top of your backswing can tell you how well you're swinging on-plane. If your ... club shaft is too steep or too flat, you will have to make some difficult compensations on the downswing in order to deliver the club back to the ball. Swinging on-plane is more efficient. And swinging efficiently is more consistent.