[JohnThomas1]

You have gone from knowing nothing of a paddlewheel

"Even with all my years in the Navy, I've never seen a paddle wheel -- and can think of nothing that it might do that would illustrate an action in the golf swing. Please explain."

to knowing LOADS

"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?"

you are one very fast learner.