Benjammin, it is fun seeing what others are dreaming up and as one put it "thinking outside the box".

I have seen another form of ultra-light shelter that may have been discussed here called the Alpha Tent. Basically a poncho and two tent pols. Here is a LINK to it. The two poles would probably be lighter than the can of Great Stuff, and it would be reusable, too.

I will be interested in what you come up with.

Ready