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You don't need a tarp, you can insulate yourself from the weather using brush/branches/vegetation in place of a tarp.

I saw that charred cloth trick on an episode of survivorman, it was neat.

By the way, these are the lighters I was talkign about:

http://www.uniweld.com/catalog/accessories/flint_lighters.htm...

It is one of the easier ways to make fire. Compared to rubbing sticks together using flint to spark is super easy. They even have flint "lighters" that take any guess work out. In fact I'd rather...