So I was able to take my Jarbridge down to 32 degrees and remain comfortable. I did two things. I wore all the layers I would carry in my pack and I fiddled with suspension. Specifically I tied some cord around the suspension shock cord about 16 inches from each end of the hammock. This helped keep the cinched ends snug against the hammock and stopped drafts. It really see.ed to help because before doing that I was feeling a slight chill on the hind parts. I went to bed a bit cold and woke up warm.

I will do more testing so I am confident in the 30's.

Thanks for all your input.