A lot of instructors teach the switching back and forth between the cue ball and the object ball.
I am going to be trying some of your suggestions Lee. I can understand the switching "possibly" helping raise the head as you pick up your eyes to look at the object ball.
Thanks,
JoeyA
This promotes tunnel vision, getting in the zone with your focus.
By switching between the 2, you need to pause on the object ball before hitting the cueball, or your head will come up with your eyes.
watch peoples eyes next time you play, you will see this fundamental error, especially with longer pots.