Here is an experiment for you.
Have someone push your arm at the point of contact while looking up, and then have them push your arm while looking down at it. You will feel the difference in power.
This is slightly off topic:
I finally broke down and bought a WhipHit, and used it in practice for the first time this weekend according to the instructions posted on the website (and this forum). I noticed doing two hand and front hand drills off the tee, that the girls who were pulling their front shoulder out too soon could not hit the ball off the tee with the Whiphit, though I'm wondering, does this have more to do with pulling the head out than the front shoulder?? Any insight is greatly appreciated!
When the player starts on the heels or shifts toward the heels the front side and head are more prone to come off the ball.
Off topic more. I was told to cut an old garden hose to length to accomplish the same thing as the whipit. Have not tried it yet but seems like it would accomplish the same thing without spending any money.
Pulling the ball can be caused by 4 separate issues with the whip hit.
1) The front shoulder is flying out. It will be a dramatic pull. The head not being down and following the ball will also allow it but not as pronounced.
2) If the back hand is dominate and allowed to push the hands you will wrap the rope around the ball pulling it or slicing it to the pull side.
3) If the front elbow does not pull as hard as it needs to and allows the back hand to be dominate.
4) Is rare but I have seen it. The hips are firing out of sequence with the upper body and over rotating to quickly.
Edge Athletic Training Facility. edgeathleticcenter.com