I made a mount for the camera this morning.
Using some stainless steel flat bar, a 6mm dia countersunk bolt, a short length of rubber pipe, a 1/4" bolt and a large flat washer.
The Police light mounts have a 10mm hole and the rubber hose fits nicely through it and protrudes about 4mm or so. The 6mm dia. counter sunk bolt fits into the flat bar but sits flush with the top surface. It goes through the rubber pipe and a stainless washer and nut goes on the end. By tightening the nut it makes the rubber pipe bulge inside the Police light mount and this makes the flat bar rubber mounted but rigid to the bike. I cut the 1/4" stainless bolt head so that it had two flat sides and then I bent the large flat washer over it to form a wingnut.
The tight fit of the rubber pipe still allows the flat bar to swivel but only when you want it to.
This afternoon I mounted my cheap Aldi HD video camera to it and recorded some riding video. It wobbled a bit but that was due to the cameras mount flexing in it's body (they're not designed for this type of mounting and recording. The Drift Ghosts-s fitted and worked flawlessly on this mount. Videos to come.