[Daryl]

"Impact Swivel"? Where is that in the book?

The Left Wrist needs to change from "Turned On-Plane" during the Downstroke to "Vertical" for Horizontal Hinging for the Impact Interval. This is called a Swivel. There are 3 Swivels for a Swinger. "Start-up Swivel", "Pre-Impact Swivel" and "Finish Swivel". Each of these Swivels moves the Left Wrist from Vertical to On-Plane or On-Plane back to Vertical.

2-G HINGE MOTION Thus, though some procedures may cause the Clubface to “Close” in relation to the Plane Line, none will be an actual “Roll” of the Hands. See 2-C and 6-B-3-0. There is, however, the “Release Roll” (Swivel) which is a true rotation of the Hands into Impact alignments by Accumulator #3 with (10-18-A only).

Bold by Daryl, to point out the place in the Book describing the Pre-Impact Swivel.

Why would you want your Right Wrist to be "fully bent"? Isnt it ideally an Impact Fix degree of bend?

Fully Bent Right Wrist = Fully Flat Left Wrist. With the Ball played in one location while using the Turned shoulder plane, the Right Wrist will be fully Bent for all clubs, Hitting or Swinging.

I think that Uncocking and Rolling is the easier part. I think the Trouble is with the Swivel. My Tip will help get through the Swivel.