What's the best way to mount the camera? I'm having trouble fitting the camera to my helmet - not too sure whether the mounting bracket for the camera should have the entry point facing upwards or downwards. Also the helmet feels very heavy on one side. I'm using the rubber strap at present and the camera's a bit unsteady. I have velcro straps which I could insert through the vents also. How does everyone else manage it? (Also posted in commuting).