There is a group of teachers who "teach from the book," who have started drawing the TURNED SHOULDER PLANE at a point WELL BELOW the correct point.
I have showed the point CORRECTLY DRAWN on Mac O'Grady and Sam Snead.
It is obvious from these pics, that ANY point on the body at address, IS NOT A RELIABLE WAY to determine the TURNED SHOULDER PLANE.
It is a dangerous precident—in my opinion—on many levels.
#1. It is producing golfers with swings SO FLAT, that these golfers are forced below plane, too far "out to right field" both, or have to come over the top of this FLAT BACKSWING to "locate" the turned shoulder plane to get the power and guidance it provides.
#2. Because it is wrong. The Golfing Machine is a great piece of work, and it is being misrepresented on many levels, this being one.