[12 piece bucket]

What most seems missing is the idea that the Clubshaft Angle is the Plane Angle. Whatever the Angle of the Clubshaft, is the Plane angle. The Plane board should be set to the angle of the Clubshaft not the Clubshaft set to the Plane board. You should swing up and down the same angle of inclination of the Clubshaft. Your Hands and Grip control the Angle of the Clubshaft.

All of the various Plane Angles we talk about are reference points for the Clubshaft Angle. That Angle defines the Angle of the Plane.

Therefore, when at Impact, the Clubshaft extends through your waist where it's touched by your right elbow, then we say that the Clubshaft is on an Elbow Plane. If, at Impact, the Shaft Extends through the Location of your Right Shoulder where it was at the Top of your Backswing while using a Flat Backstroke Shoulder Turn, then we say that your Clubshaft is on a Turned Shoulder Plane.

The Quest, Nirvana, Valhalla, The Holy Grail, is to have a Swing where the Right Shoulder, Hands, Right Elbow, and Right Forearm are on the same Plane as the Clubshaft during Startdown; and at Release, the Hands Right Elbow and Right Forearm are on the same Plane as the Clubshaft for and through the Impact Interval as the Power Package Unfolds to Both Arms Straight. Curiously, this can ONLY occur if your Clubshaft angle is set to the Turned Shoulder Plane. But, unfortunately, even that’s not enough. You need a Hip Slide to help the Right Shoulder follow that plane during the Start of the Downstroke.

In the Picture above, Hogan appears to have his Clubshaft On Plane. However, it’s not the same plane he’ll have the Clubshaft on when the Ball is struck. I know this because his Right Elbow is Over-Bent and the Clubshaft Angle will flatten as he unfolds his Right Arm. Currently, his shaft is very close to the Turned Shoulder Plane. But so what? His Right Shoulder, Right Forearm, and Elbow are on Different Planes. But so What? He’s Hogan, he’ll get the ball to the target regardless of his poor geometry at this stage of his swing.

You're kidding right? Poor geometry? Hogan? Hogan pretty much matches the shaft plane as you have described above . . BUT . . . THE SHAFT PLANE AT ADDRESS IS FOR MOST IRRELEVANT . . . How many people actually match the shaft plane at address at impact??? You just said the be all end all was having the stuff whatever it was you said "on-plane" at start down . . .