What's a good knot for tying a rope between two trees and keeping a tight line?

[abo4ster]

Been using a variation of the trucker's hitch lately. Starting around 1:59 this video provides a suggestion for tying a tarp ridge-line...

[video=youtube;XbNctSygJvo]http://www.youtube.com/watch?v=XbNctSygJvo[/video]

 

[HikingMano]

Nice, I'm going to try that clove hitch on a bight next time.

 

[TedV]

Thanks all, more stuff to try out.