[Yoda]

Hogan said something about a belt looping around the elbows in an articule titled "Learning Good Golf by Sense"...and nowadays we have many arm connection type training aids.

Please, KOC, and with all due respect to the late Mr. Hogan . . . NO!

No constricting belts around the arms.

No constricting yarn entwining the arms.

No constricting towels under the arms.

All these inhibit the free Right Arm and Elbow Action on the Backstroke. We are, after all, 'winding up' to 'throw a ball'.

Instead, at Fix (and then at Address) align the Left Arm Flying Wedge and the Right Arm Flying Wedge at right angles to each other. [For newbies, please use the search function. There are countless posts on this subject. See the arm alignments in my avatar for the Accelerated Course. ]

From Start Up, connect the 'wedges' with the 'glue' of Extensor Action. This is no big deal: simply let the free Right Arm tug the Left into the Backstoke.

Finally, understand Right Elbow action and its participation throughout the Stroke. It lifts and lowers the Left Arm as it Cocks and Uncocks the Left Wrist.

This is Zone 2:

Arms aligned to produce Clubhead Power and Force.