[Matt]

Thanks Yodasluke,

That makes sense to stop the right shoulder after it picks up momentum so that it can function as the back of the cannon from which the right arm can thrust downplane. Can you tell me about how far does the right shoulder move down the turned shoulder plane before it stops? Thanks in advance!

I believe the right shoulder thrusts until the right elbow gets on-plane, at which time the shoulder thrust stops and the right arm thrust takes over.