I've used lots of tarps and firmly believe in their versatility, Army shelter halves as well. Being a fanatic of canvas and leather and what nature provides out in the wild, I purchased some oilskin from Tentsmiths to make my own tarp. They sell ready made oilskin tarps, using 6.25 oz. fabric. The oilskin they sell by the yard is not the same weight, it's actually more like 10 oz. material. Tentsmith oilskin tarps are brown, while the bulk fabric I purchased is forest green. So here is what I have so far, I wanted a 9' x 10' but by the time I rolled and stitched the outer seams and made a lock joint in the middle, two pieces joined together to makes a finished tarp 102" x 114" ( 8'-6" x 9'-6" ) OK so far, not perfect but a good start anyway. Rolled up weight is 7 lbs. which I would say is on the heavier end of so-so. Not ultralight by any means, but this is serious material, I'm impressed with the high quality of the oilskin. The fabric used in ultralight shelters is coated synthetic and high in tensile strength, but not in field use where abrasion and the elements will quickly wear down the hi-tech material. I wanted to compliment the oilskin with all natural materials so I used army canvas and cotton army webbing for the tie out loops. Here's the corners with canvas reinforcing. It was tough to stitch, going through oilskin, double canvas and double webbing required a heavy stitching machine. Here's the beast set-up with hot tent stove configuration. A foot of snow fell during the night. Tarp is warm to the touch. Natural fabric retains heat while synthetics only make a thermal barrier. Inside temperatures were not measured but the guess is 60-70 degrees. Trekking poles collapsed in the night from the weight, so a natural wooden stick or a lashed A-frame would be better. If I were out among the trees, I would run a guy line to suspend the ridge. A makeshift door was used for the experiment, stove-jack is special fireproof material from Titanium Goat, the round stove is from them as well. A canvas door flap with built in stove jack would be the next addition for sure. Thanks for looking !