Re: BOWL-ONLY: for mounting off-Tripod. Sources?

Wild... Yes, 80% of the way, with simple tools. You probably know this, but Warren Miller used ladders too. He'd keep it folded and flat, mount his 16mm on the step side at one end. Then, at the balance point, slip the rig over his body through one of the step openings and hold the rig with his hands... and then ski behind or in front of his moving subject while he'd ski within the ladder frame. Smooth. (I suppose falling with that rig would be a real bummer!)

I do the same in the field (when I remember), using anything with mass and a bit of length. Once used an 8' bamboo culm to tape farmers in Northern Thailand. Smooth.

-> Ralph