He had mounted the camera in the middle of his chest, but that wouldn't work on the Skorpion as the screen would get in the way. I bought a harness designed for Police and security officers to hold their radios next to their shoulder.
It has adjustable straps that go over your shoulder and fasten around your chest, and an elasticated pocket for a radio.
I cut the pocket off then stiffened the harness by glueing and screwing an alloy plate to the back. I then screwed a bracket I'd made from Ram Mounts to hold the camera and adjust its angle.
I fastened the harness around my chest and adjusted the straps to as tight as possible to mimimise movement of the camera in use.
I sat on the bike and adjusted the angle of the camera to what looked about right then went for a run.
Not bad for a first attempt, and I'll try some more videoing when we get better weather. If anyone's interested, this is just round the corner from my house, one of the advantages of living in a small village - you're never far from countryside.