[BerntR]

I didn't acknowledge "Bernt's explanations of different RPM's for the left arm versus the clubshaft" because it's irrelevant.

I don't think TGM would have surfaced if this was irrelevant. The flat left wrist that was one of Homer's first discoveries - and probably the single variable that mostly caused his early success on the golf course to be highly variable. It's the RPM difference that breaks down the Flat Left Wrist.

The flip is embedded in the geometry and the external physics of the stroke, and unless you deliberately do something to prevent it (and know what it takes) it will happen.

Rhythm isn't just about resisting CF. But CF makes it really difficult to obtain a good rhythm.