Why messing around when you can buy a replacement one that you can slap it on in a few minutes and ride harder. We got the 59" replacement depower line here that will work on all control bars:
Unfortunately, I did not know that setting R4 on the GoPRO HD camera would flatten out the waves and that was the case for this video that I filmed a few weeks ago down at Punta San Carlos.
The GoPRO wrist mount will not fit the GoPRO HD camera.
I made both the Wrist Mount and the Ankle mount. I use the Tripod Mount from GoPRO and cut the PVC pipe in a half and put the screw through it. Then I use velcro to complete it.