The Ball has NO IDEA if the head moves during the swing....
ONLY if it moves during the impact interval.
Sub-optimum that.
1-L #2.....
DG
This is silly. At the end of the day, what SHOULD be done is 1-L #2 as stated by DG. I wouldn't teach anyone to bob (3-F-7-C). To say bobbing is a good procedure is just...well...
However, IMO, Mike has a beautiful swing, well coordinated and dynamic, executed smoothly and deliberately. I wouldn't mind having a swing like that!