Nine quid from eBay,
Quick jaunt out this afters, a game of Welsh Roulette (sheep not bullets) to see if the sub ten quid camera mount works. I think it does
Basically just an aluminium 'Z', solid, no flex. GoPro mount and also standard tripod 1/4" threaded hole on one end and a hole for the mirror stem to go through on the other.
Works suprisingly well on the V but with a bit of jello at the 60mph buzz point.
Hero 3 camera , 1080P 48FPS, no processing etc. just straight from camera to GoPro Quik to YouTube.