This comment made a light go on for me. Or at least I think that I did! For sometime I have thought that all one needed was to trace the plane line with a flat left wrist and have the clubface pointed in the right direction for the shot shape you wanted. Reading this quotation suggested to me that there is a fourth component to controlling a shot, and that is what the D-Plane tracks, namely, the steepness of the swing as it brings the clubface into impact, or the angle of attack on the ball. The steeper the swing the more to the right the ball flight. Forever, I thought that the only thing that a forward-leaning shaft did was to close the face to give a lower flight path. It may happen that way, but only if the ball position is such that there is no net change in the angle of attack on the ball. A flat-left wrist, tracing a straight plane line, hitting down on the ball with (most of the time) a forward leaning shaft (with TGM hinging not contributing anything really except insofar whatever you attempt to do with hinging will change the angle of impact) will not by themselves explain ball flight and path. You need to understand the D-plane characteristics of the shot to have a full explanation of ball flight and path.
Am I any where near correct? If not, can someone tell me where I am getting it wrong?
