I'd say get a bullet cam that will plug into your current cam.. You can keep the camera in a vest pocket or something to keep it warm, then put the bullet on your helmet or on your binding. To let somebody else use it, just unplug the bullet and they're off.
We use this technique for setting up "in the line of fire" cams for rally races, as the bullet cams usually have a garuntee. One company offers a garuntee that says if the camera is broken, just send them the video of the camera being broken and they'll replace it. But I digress...
The problem with bullet cams is as pokkis said, finding a camera that you can plug a bullet into.
Soft bootin it since winter of 1998 (or sometime close)
Hard bootin it since December 2006.
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