The answer is very obvious if you swing a bat.

Why won't they swing a bat?

It ELIMINATES SPINAL ROTATION....ELIMINATES BOTH HIP AND SHOULDER ROTATION....It FORCES you to turn the barrel and BYPASS shoulder rotation....which is a must....if you want to reach the high level pattern.

It FORCES an 'out from' path....the pinwheel.

It FORCES....two pivot points....instead of spinal rotation.

If FORCES....THE MAGIC MOVES
It ELIMINATES the merry go round.....a must.