Coil

[dkerby]

Yoda has a drill for short pitch shots that seems to set up coil during
the address. Set the toes toward the target but set the shoulders
parallel to the target line. You will feel immediated stretch of the muscles
for a good pivot. Then take the club back back a short distance and
turn the hips left for the down stroke. The stretch of the muscles can
be felt throughout the downstroke. Next, only open the feet 45 degrees
and hit the ball a little further with the same feels of stretch. One
problem that I am not sure of is ball placement in relation to the feet?
Seems that moving the ball a little forward toward the target helps.
Another thing that helps me is to concentrate on maintaining a bent
wright wrist through impact and let the pivot do the job. Next you can
take a square stance and hit shots with with feel of lag that you got
from the previous exercises. I think that you will feel the shoulders
lagging the hips throughout the downstroke.

Seems that Hogan and V.J. Trolio accomplished the the same thing
later in the swing when they had the arms moving back while the
lower body was moving forward/pivoting left.