[Mike O]

The swinger uses cf to bring the power package, from left shoulder to right elbow into impact. The clubs face is under the control of the flat left hand.
In fact the entire swing should remain under the direction of the hands. CF involved or not.

HB

In any Golfing Machine discussion a starting point is what Homer Kelly thought or wrote about regardless of whether anyone thinks it is correct or incorrect. Once you've established that frame of reference you can or have the option to disagree or diverge off of it and support your conclusions with facts.

Your post above shows that you don't understand the difference between a "True Swinger" and a "Manipulated Swinger" as defined by Homer Kelley.