I just finished seam-sealing (permatex flowable silicone) a guide gear emergency shelter tarp that I bought from bargainoutfitters.com for $18 + $6 shipping, on a recent sale. The product number is B19A3-216630. The link: http://www.bargainoutfitters.com/net....aspx?a=541441
The tarp comes with a bunch of junk, such as poles and nylon tie-outs, but stripped of everything and adding 12 feet of zing-it and dutch tarp flyz on each side, it weighs 21.8 ounces. It is made of 190T polyester and coated with polyurethane. It has a catenary cut, and tie-out loops on the four corners.
This is a huge tarp with a 14-foot ridgeline, bigger than a superfly (which weighs 19 oz). Probably overkill and a bit heavy, but the price was right, and it will probably be my shelter until something better and lighter comes along. Then it will become the backup tarp.
There's a youtube made by forum member trailmedic911, who was the one who pointed me to this tarp and the recent sale (thanks!). The link is https://www.youtube.com/watch?v=9D3GJaThfZg
I haven't tested it on the field yet, so I would welcome any comments from experienced users. I know that the permatex bonds fine to silnylon, but I am not sure about polyester and polyurethane. Thank you.