Take a look at this tent I made from some lightweight waterproof ripstop and a package of bug netting. It was made a little high because my wife wanted a little more room inside...and if we were expecting really bad weather we would have added a porch on the front...but it's a great tent. And don't underestimate the value of the bug netting. It's nice to be able to lie in your tent and see the clouds of mosquitos OUTSIDE trying to get in!

http://picasaweb.google.com/balzaccom/BoundaryLakeYosemite09#5365884076254249554

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Check our our website: http://www.backpackthesierra.com/

Or just read a good mystery novel set in the Sierra; https://www.amazon.com/Danger-Falling-Rocks-Paul-Wagner/dp/0984884963