this my preferred gopro mounting
on the shoulder strap of my camelbak. You have to chisel off the center notch of the back plate and file down the clip to give space for the strap. If you don't want to use the "pantograph" attachments you have to file down the top of the mount to give enough clearance to rotate the camera up enough to give a good forward view (well from my riding slouch anyway). It makes for a very solid and convenient mount with the controls in easy reach.
could do with rotating up a touch more but I do wish the gopro mounts hadn't just got the 1D rotation when used without the attachments.