Grip a straw in your RH index finger (opposite for lefties, of course). Locate it securely in the joint. Regardless of shaft butt diameter or finger length and their obvious implications, that's what Homer was talking about.
The Clubshaft is being driven by an On Plane Force (1-L-#10) -- Centrifugal (Swingers) or Muscular (Hitters) -- that is likewise On Plane and (through Impact) directly BEHIND (and in total support of) the Shaft.
Moving around the shaft from the leading edge of the clubface, at how many degrees of arc is the On Plane Force located?
Threaded Mode
