You wanNa Ensure your warmth create your microclimate with a lightweight breathable sock and pitch a 4 season over it for under 10 degrees and you'll really stay warm because the ambient heat loss in the sock will be less. Assuming your tarp is around a pound it's worth it I think. I've tried making a few variations of winter socks that actually seal heat in with wind but moisture goes up and warmth drops so I use both for now till I give in and get an expensive material that does both WELL. I do all this because I only wanna. Ring a tq and uq as opposed to sleeping in tons of clothes. A query method but it's working for me. You can also wrap your tarp with some shockord and see how well that works for you assuming you got an extra tarp.
Amazon 2 90 by 156" table cloths for 40 bucks total sew them together and cut the edges like a crescent and sew that together except at the end of the edges which need to be hemmed and shock order. Then get yourself a stick on zipper about 5 feet and place it and sew it it and cut yourself a door and let me know if this works well so I can do it too lol.
Last edited by saniun; 09-21-2012 at 19:58..