I know I've read "the flat left wrist must stay vertical or perpendicular to the plane as the right forearm traces the plane line" at least 100 times.
It finally clicked yesterday after 2 lousy range sessions!
Amazingly, extensor action is much more significant (you feel it more) when you make sure of this simple but oh so important fundamental. Also, the turn feels so much tighter.
I now know that during the last 2 range sessions I was "switting"
Could you give a bit more detail on this? I am having problems visualizng this in my dense mind. What part of the wrist is perpendicular to the plane line for starters?
It would probably be clearer, if I find the qoute from Yoda and post it here.
This is how I look at the left wrist - hold your left wrist out in front of you, flat and level, with the back of your left hand facing the target.
Now imagine a railroad spike driven through your wrist from top to bottom, so the head of the spike is facing the sky and the point is facing the ground.
Take your club and address the ball. That spike is pointing perpendicular to the flat shaft plane. That spike needs to stay perpendicular to that plane as you take the club away from the ball.
You take the club away while your PP#3 and right forearm traces the target line, right before your right elbow bends to take the club up and in (taking the oath, or pulling the lawmnmower cord).
Read the thread on Ted Fort's wedge swing. This is what causes his clubface to be closed (pointing to the ball longer that conventional teaching) during the backswing, and then contributes to that angled hinge during the forward swing we use when hitting.
This is how I understand it. Might be wrong, but right now my ballflight seems to indicate that it is correct