Originally Posted by Bubba
I tie my ends to the tree and have prusiks for adjustment so i really feel there is not much difference from an above the tarp CRL. Under the tarp CRL can provide support for the tarp when there is wet snow for example and it provides a place to hang stuff under the tarp like wet clothes or gear. Whatever works for you.
I like this idea a lot too. In fact, I just saw Caveman's thread and video
and may give this a try myself.