The question I have for Brian (or others) is I the rotation is around that point at base of head, between shoulder sockets, but I see Miller has a decent amount of changing spine from facing into his left hip at address to moving his hips back and his angle tilts towards right hip (following a little "step on right foot" and slide from Miller?) and facing away from the target at end of backswing. (The hip position there look more like what Brian describes in NHA2). And I guess if Miller had rotated his hips even more on takeway and further around the spine might appear to be facing more up and down and less away from target (because it is more behind the player) or even facing back towards target again. True? Does any of that mean anything? Do you want to have to add more tilt to impact for some patterns and want to have to add less tilt through downswing in others?