aim-
I think a missing ingredient here as first proposed by Dixon (Jim) is that "dynamic balance" and weight shift require a mode of functioning associated with a certain type of muscle tone/"posture" Dixon called "torso activation". The torso then can trigger/initiate patterns and sequences with movement/shift of the center of gravity which the limbs respond to.
Tom-
I've been reading through some of Dixion's material and I like the concept of the limbs responding to the torso when it comes to weight shift.
I find it difficult to determine cause and effect at the point in the swing where the coil reverses to uncoil because I'm on autopilot at that point. However based on the many swings I've taken, I think an argument can be made that the pressure felt at the rear foot prior to the back knee turning in, could very well be the back foot absorbing the sudden force created when the hips reverse. IOW, the back foot is supporting the hips as the coil reverses to uncoil. The sensation at the back foot at this point in the swing that many describe as the back foot pushing off against the ground, is probably the back foot pushing back against the force directed it's way by the hips/torso during the coil reversal. IMO this is a significant difference and changes how one would go about teaching weight shift.
I'm focusing my efforts upstream of eversion and the down and in turn of the back knee; as I now believe that those actions are an effect of a proper weight shift done by the hips/torso/core. If I can teach an action upstream that leads to eversion and the back knee turning down and in, then IMO that is the better way to go. This is similar to how many coaches teach the girls to throw from the "L" position, when in fact the "L" position is not the critical action in the throw. As Hodge says, if you think there is something important going on at that point in the throwing motion, you are too late. The important action happens before the arm gets to the "L" position.