A few additional notes on hanging on and swinging:
-My hand rotates from the "Swing" to the "Grip" position every single time I get a placement and then hang off the tool. Easier than it sounds.
-The tool rotates around my pinky finger pretty much, the middle and index fingers are relaxed.
-The same rules as ever still apply for an overall good swing--elbow at or above the shoulder,fingers, wrist, lower arm, humerus all aligned, look before you swing.
-I underestimated the amount of rotation around the ice tool that my fingers go through. It's not 20 degrees, it's closer to 45 degrees from the "grip" to the "swing" position and then back. I got that wrong in the video.
I shot this right after a training session involving the "splice," or steep plice plus ring dips and deadlifts, and I'm a bit hammered. Thanks to Keith for the help.
Edit a little later--and the reason for the leash on my left hand is that my left middle finger is broken, a leash makes it easier for me to hang on during the training sessions.