Tball,
I'm not an expert at this; I'm a new hitter myself (13 months)
However I will share my experience and maybe you can identify something that will help. I have problems with hooks when one of the following occurs:
1. not stopping at top... bends the plane line and for me shuts the face.
2. poor extensor action... this causes a bunch of impact problems but hooking is high on the potential problems list
3. right shoulder moving out instead of down plane...and usually this is associated with #1 above.
A hitter should feel a 'slow start down' - a very 'heavy' swinging motion to the club. Chances are good that when you hit those big hooks, you are out of the Rhythm of the swinging force, your transition is too fast. You need to smooth it out. Humming a tune/walz etc can be very helpful, as can some eyes closed swings with a heavy club/two clubs.
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