- Force the correct motion through the impact area
- Provide instantaneous feedback for both correct and incorrect mechanics
One of Jack's greatest discoveries was the simplest of training aids - the Kuykendall Sponges.
One of the major problems with students for a long time was lining right and pulling back across their bodies. The sponges cure this major problem.
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Almost everyone in the golf industry believes that the plane of the swing is as shown here. They believe the plane is parallel to the intended line of flight and that your should swing from inside to impact and back inside again. The plastic device shown is sold to accomplish exactly this image.
Unfortunately, it is incorrect. All those laser light and plastic plane swing devices produce an incorrect swing path!
This is why no one ever improves because they use them. If they do improve, it will be in-spite-of and not because-of.
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The correct plane of the swing is approximately 10 degrees to the right of the intended line of flight.
When you swing on this plane, you will develop correct mechanics and improve your game.
Jack's Sponges provide instantaneous feedback for creating correct mechanics.
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If you hit the back sponge on the backstroke, you are taking the club back in a difficult fashion - the traditional straight back method.
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The simplest method is to take it back inside - along the 10 degree line.
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If you hit the back sponge on the downstroke, you started the swing with lower body rotation (which move the right shoulder out) or you start the downstroke with shoulder rotation. Either is the cause of slicing.
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If you miss the front sponge and the ball goes right, you did not rotate your forearms correctly.
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If you hit the front sponge, you are pulling in your arms or rotating the body.
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The only way you can hit a ball between the two sponges and have it go straight is with a correct mechanical motion.
