Aw nuts, now I have to think how I do that <img src="/images/graemlins/smile.gif" alt="" />. I had a hard time learning this knot also. One night I just practiced it until it became muscle memory.

This will be hard to describe in words. Assume one end of the rope tied off to the tarp. The bitter end is looped around a tree or whatever and brought back alongside the standing end. In this general area a slip knot is made and the bitter end looped through that and cranked down tight by pulling in the direction of the tree. Everything up to now is just like the guy showed in his video. The hard part is that last knot. Here's how I do it: To tie it off, I pinch the loop area between thumb and forefinger to keep things taut. Then with the other hand I make a slippery half hitch and pull it up tight against the loop, in the direction of the tarp. You might try it with a plain half-hitch first, it will be easier. And you can use two half-hitches for a sturdier knot. I hope this helps. Like I said, that last knot to secure the loop stumped me too until I just did it a few times.

Since you are interested in tarp tents, here is a link to the fabulous pyramiddle tarp tent: [url=http://www.hufsoft.com/bsa51/page0003.html]
It is the only tarp setup I know that is completely enclosed. My 9 x 12 poly tarp has the grommets placed exactly where they need be to set this up.