I used the wrist mount last week for the first time on the kite. Needed additional longer pieces of velcro to get the strap arround the strut. Video wasnt as shaky as i thought it would be. But maybe that is my great kite flying skills.

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I set the camera on narrow, so didnt capture alot of great footage. You may need to use medium or wide setting. i need more time on the water to perfect the camera position, and get better footage.
Laurie has a good section in the "how to" section on placement and adjustment, of the camera, bear in mind the strut angle changes as it joins onto the leading edge, and you may need a little padding to centre the camera better.