The trucker's knot has worked very well.

One thing I would add to the video: it often helps to leave yourself some extra room. The way he shows it in the video, if he wanted to cinch it down some more at some point, he would soon run out of room. The loop should (in many cases) be tied up farther -- away from you, or away from the end that you are looping around a tent stake (or whatever else you are looping it around to anchor it).

The idea is just to allow for extra cinching. The system (or the knot) gives you extra power to cinch things tight, and you often end up cinching in more line than you expect at first. Just leave some extra cinching room by putting the loop up farther (toward the tarp, if that's what you are using, or away from the anchor).

It becomes clear once you do it a few times.