"what I see is the red plane representing the perpendicular(to the plane of the left arm assembly) plane of the left wrist hinge pin, so the motion would be horizontal/parallel to the inclined plae of the left arm assembly until the swivel starts, and then the red plane would have to rotate to the finish position."
I'm still not sure what it means in terms of the golf swing, but I think I finally got it. First off, Jen's plane exists at all positions through the swing. As matthew has defined at at the top, it is vertical to the inclined plane. The orientation of Jen's plane relative to the inclined plane however is different at each position you look at through the swing. It's is just a representation of the rotation through impact of the left wrist hinge pin. At the top, it would be vertical, at impact parallel, and at finish, vertial again. This is Matthew's closing book analogy. Also, since the cocking/uncocking motion of the #3acc stays in the plane of the left arm, I can't see how Jen's plane is affected by the amount of wristcock at any particular position.
Hybrid Mode
