What can I use for a false crotch while taking down a tree?

[JimHarrisSC]

I'm fairly new to climbing. I have taken 3 medium sized pine trees down and my yard by climbing them and taking them down and sections. I am using a flip line and also tying off to the tree with my fraction saver. My question is, what can I use to create a false crotch around the trunk of the tree to tie off my climbing line to while I am cutting sections of trunk?

 

[jefflovstrom]

Again, move it to Arborist 101,,
Jeff