[Weightshift]

The Paddlewheel reference has nothing to do with Zone #2 (Clubhead Power) and everything to do with Zone #3 (Clubface Alignment).

The blades of a paddlewheel remain vertical to their axis of rotation.

I have a problem with your "remain vertical to" terminology. A blade is either vertical or it is not. Vertical is absolute. I would rephrase this to read "The blades of a paddlewheel remain perpendicular to their axis of rotation", if that is what you mean.

(Oxford Concise Dictionary)
HORIZONTAL: Of, at, the horizon; parallel to the plane of this, at right angles to the vertical.
VERTICAL: Of, at, the vertex or highest point; at the zenith; perpendicular to plane of horizon.

The axis of rotation of a paddlewheel is the spindle on which it turns. At any given moment only two blades can be vertical (absolute) and only two blades can be horizontal (absolute).

Before I go any further - do you agree?

Regards,
Alan