[nevermind]

The second and third picture (from the left) are both correct. Just different body types and/or different amount of Axis Tilt.

So it's OK to have a straight trail arm at Impact? Assuming an almost straight arm, what, if any, is the impact of having the Follow Through at such a short distance from impact?

You always want the entire Right Forearm (which includes the Right Elbow) to be On Plane at Impact giving you maximum support and minimizing Impact deceleration during this violent collision. This will almost certainly mean having the Right Shoulder slightly above Plane. There is absolutely no problem with that (10-13-D).

This is what I've been after, thankyou. I'll take the always for whats it's worth I've read that one of the reasons that the TSP is so good is because the trail shoulder can provide support to the clubshaft. At what point does that occur, for how long and what is the benefit in terms of actual performance? My guess is it begins supporting at Start Down, continues to do so for as long as the shoudler remains on plane (usually as far as Release?) and I've no idea to what extent it improves consistancy, compression etc etc. Maybe it just helps a little in keeping the club on plane at Start Down

The red line represents the Turned Shoulder Plane, which was drawn through the Right Shoulder joint when Lynn was at the Top. The tiny blue dot represents his Right Shoulder, which is clearly above Plane.

Interested in the location of your blue dot Tong. Is it always the bottom edge of the shoulder that TGM marks as the shoulder? Can you tell I'm no anatomy expert? Did you take into account the camera angle when you drew that TSP? I've got that clip and if I draw the line where you have it it is WELL below the shoulder at the Top. What am I missing?