[nuke99]

Mind if i try?
Think about the ball and socket joint of the right shoulder for a moment. Is this purely a lateral motion of the right shoulder joint (fanning)?

Why is this procedure superior to a big muscle backstroke? (Acutally a combination of many, many small trunk and back muscles working in unison because the only big muscles of the upper trunk are lats and chest muscles)

Do not let the pivot gets in the way of delivery path/line, TGM. The Trunk simply reacts to the thought of educated hands' Motion.

When does the horizontal motion of the right shoulder joint come into play?

I was taught from body controlled pivot to hand controlled pivot simply, the right forearm lift the rightshoulder and the right shoulder pushes the left shoulder etc.

Should these pulled trunk muscles be active or passive?

Passive


What direction is the right elbow allowed (by nature) to move?

I am not very sure about this. but I think extensor action is force below plane Tricep pulls the elbow below plane. If there is extensor action and you pull your trunk back using forearm takeaway. the elbow would react to the hands.ie the hand pulls the elbow. That is why extensor action is very important in the elbow component. It should be allowed to move freely on a plane dependant on elbow variation. Pitch you allow roll + fan. punch you only allow fan. all reacting to the motion of the hands, Do you need to think about it? not really

Thanks for letting me try . I hope my Master had taught me well.