What if you are a hitter? Geez....
There AIN'T ANY true "hitters" in golf. All good players use the HECK out of their pivots!
Here is how the left arm should work:
1. The ARM swing acoss the chest on the Backswing
2. The CHEST tunrns into the ARM on the downswing
3. At some point the KINETIC CHAIN helps the LEFT ARM blast off the chest as the right arm swings into it.