How ironic, I just got your book on Amazon and am currently reading it (great book by the way). Last night I left off on the page about the continuous ridgeline. I like this design better though, because there is no carabineer required.
Also, what do you think about the idea of a structural ridgeline to help absorb a widowmaker strike? (a disaster which hopefully will never happen). The ridgeline would have to be secured tightly to the tree and independent of the tarp.
I only posted here once before, and I included pictures from my almost disaster along with my thoughts on how a structural ridgeline might have helped.
Take a look and let me know what you think.