I am setting up the ridgeline on my Speer Hammock. I am just wondering how much sag I should set and how to measure it. Is it just a trial and error thing? Until I tried using a ridgeline I didn't realize the sag issue, but now that I have, I am sold. I also think that Mr Hennessey, while well within his right to aquire a patent on the structural ridgeline, is doing a HUGE disservice to the hammock world by not allowing every manufacturer to use it. Is it possible that someone could use the idea but attach it in a different manner and get around the patent infringement? Just an idea.