[Yoda]

You do not need any sort of Swivel when using Basic Motion (12-5-1). It's simply too short a Stroke.

Solid post, Leo, and you are exactly right. The Basic Motion requires only that Hand Motion necessary to maintain the Rhythm of the selected Hinge Action (2-G). For those new to TGM, remember that Rhythm is not Pace or Tempo. Instead, it is maintaining the In Line relationship of the Left Arm and Clubshaft while holding the Left Wrist Vertical to the selected Basic Plane of Clubface Motion, i.e., HOrizontal, Angled or Vertical. As always, let the Turn Feel determine the Roll Feel (7-10).