You know Wisenber, I've been noodling that idea for a while and at first I thought it was a bit high on the fiddle factor for a winter solution with cold hands and extra pieces, sealing up gaps, wind resitance, shedding water, etc., etc. But it still seemed like an idea worth pursuing. One variation that I wanted to toy around with is a one sided skirt that I imagine used in a low porch mode sort of pitch away from the wind that would function a bit like a vestibule. Then I thought why not just make it from sil nylon in order to develop the idea from less expensive materials. Then get the bugs worked out and when I'm satisfied (and have the extra cash) see if Stormcrow would use it as a pattern to mock one up out of cuben.
Peace gentlemen and ladies. And a Merry Christmas,