Through the This is True email list I found this standard scout knot site with animations.

The only missing knot was something with which to tie down your canoe to the car roof racks. The driver’s hitch, here or here would seem to be suitable though I use a simple overhand loop which, admittedly, gets very difficult to untie at the end of a couple of hundred kilometers. I don’t normally make New Year’s Resolutions; however, I might learn this knot…and the one I found for tying fishing line to a fish hook.