[12 piece bucket]

Agree strongly. IMO, there is a direct correlation between waist bend (posture), right elbow bend and left wrist bend at Impact. If any do not return to there Impact Fix conditions, the others will be forced to make compensations (reference 7-2).

I think this is why "pop" instruction talks about hips so much. If you don't move your hips in the proper manner you are shifting the theoretical "axis" all over the place . . . . even the most educated set of hands can't over come that. You can feel all the lag pressure in the world and have great alignments in the power package . . . but your vectors will end up being all skewed and the alignments of the face in relation to the path can be FLEATING at best.

So it is a hands controlled pivot . . . BUT . . . the pivot must comply to the intended line of compression and selected plane angle.