See the drill with hands like "-|" in EdZ drills post.
It allows you to maintain PP#1, while showing the right forearm motion, as well as using the right arm to cock (and uncock) the left wrist.
The other drill, fingers interlocked, will show you how a 'karate chop' of the pinky side of both hands will result in throw out and the pivot causing rotation (roll).
The two combined are a powerful way to learn TGM concepts.

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"Support the On Plane Swinging Force in Balance"
"we have no friends, we have no enemies, we have only teachers"
Simplicity buffs, see 5-0, 1-L, 2-0 A and B 10-2-B, 4-D, 6B-1D,
6-B-3-0-1, 6-C-1, 6-E-2