I am curious how you had to go "outside the book" in order to fix the problem? Over plane and under plane have the same problem, they are both off plane.
Someone once asked Chuck Cook what was new in golf instruction and he replied, "nothing. I am still teaching hookers how to slice and slicers how to hook." I have used the same philosophy many times, if someone is under plane, then I have them "feel" like they are hitting pull-fades. Sticking a dowel in the ground 6-10 feet in front of them on the target line and having them start it to the left of it with a square stance has also helped.
Ultimately you have to get the student to make a different motion than that which they are accustomed to, both from a feel and geometrical standpoint.
golfgnome,
You certainly don't need my validation, but I agree 100%. I have been under plane and way in to out for years without realizing it. Getting on a plane board and using the principles of TGM, I had no idea how much "LEFT" it feels to get the club back up the plane in follow through and finish. It's all in our little yellow book, we just need to apply it correctly.
Kevin
__________________
I could be wrong. I have been before, and will be again.
Same issue, Matt has helped me here in Minnesota with the underplane issue and it is hard to cure. Whenever I try to put more effort in the shot, it rears its ugly head. One thing that has helped me besides the feeling that pp3 goes directly out to the ball, no drop, is making sure that the clubface does not get open. I find that when the clubface is too open, my brain directs the hands to drop inside. If you are a swinger, mid-body hands helps alot, as does making sure that the right hand maintains its position throughout the swing. Put a little grass between your left hand and right hand, try to make sure you don't lose the grass. Good luck, as Matt told me on the range, it is a tough issue to get rid of.
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