[HungryBear]

Its a TSP if you shift to that plane in Follow Through or just Stay on it throughout the swing.

Zero Shift would have you TSP throughout , zero shift is very uncommon however. Singe shift would have you staying on the TSP after Startdown, double shift would have you stay on the lower plane (Elbow Plane or whaterver you choose). You could add another shift and shift from the Elbow back up to the TSP Triple Shift ..........any and all combinations are available to the golfer, but shifting can be hazardous of course.

The lower planes through the ball have a pronounced feel for going "left" or IN , which they in fact do. The steeper planes have more a feel for the UP , which is geometrically true as well.

O.B.
Thanks.
Like a few second opinions here. Both arms straight, shaft on plane. continue to trace. Looks like the options are TSP or off plane manipulation. That is significant because the Elbow plane golfer would have shifted to TSP at follow-through. The implications are enormous. Looking for sources that have addressed this issue or where HK put it as I have not found it in TGM.

The Bear