So Cher and I were stuffing around in the studio and came up with this:
It is actually remarkably comfortable and stable IF your partners know how to assist properly (and that can be a big 'IF', sometimes). Not for everyone, but something fun to whip-out at an Advanced class. Felt really good, in my body, with a 'toes on accelerator' plantar flexion contraction and a thoracic straightening re-pattern.
Yee'ah.