Ive got some gopro stuff in the works as well as at least one posted to the thingivers. The mount can be tricky because it has a somewhat high tolerance for the size and the go pro models aren't exactly alike. For example the HERO3 has a different sized mount than the gopro2.

What I am working on is for attaching it to a quadrocopter and it's mostly an issue about the COG and vibration fracturing the plastic. I haven't given up on it but I have taken a break from it