[golfbulldog]

"The Push of the Right Shoulder accelerates the Swinger's Left Arm and
causes it to Pull the Hands and Club (6-B-4-0). The direction of that
Pull is toward its source (the Pushing Right Shoulder). Therefore, when you
Turn your Right Shoulder Down Plane (toward the Ball), i.e., 10-13-D #3 per
2-H, 2-L and 6-E-2-1, that is the direction taken by your Left Arm and Club
-- the Golfer's Flail (2-K)."

Lynn Blake words above, my bold...

10-13-D On-plane shoulder turn...Homer Kelley's words and photos...dianne's pics show the right shoulder moving down the turned shoulder...single plane throughout the downstroke..."the right shoulder moves toward timpact precisely on the preselected downstroke clubshaft plane..."

Homer Kelley's words above...

These words seem to have established in my mind that the right shoulder moves on a single plane on the downswing...now I will go back and read Matthew's words again...

PS. guys - the thread was about plane of left wristcock...and left arm.... it has been interesting chat so far...very illuminating but maybe we need a 2-H thread for shoulder motion as a whole?