Garlington insulator to the rescue
Hiked a chunk of the Ouachita Trail last week. My BA air mattress failed the first night. I also had an Oware 40" x 60" x 3/16" pad. The first couple and last couple of nights were warm (40s-50s), so no problems, but it got down to freezing a couple of nights in the middle. I improvised a Garlington insulator from my poncho, filled it with leaves, and was actually warm down to 32F.
Had a great time. Spent part of a night on a shelter floor since I had the shelter to myself. Woke up around 10:00, staggered stiffly out of the shelter, put up the hammock by headlamp, threw in pad then bag and crawled in. What was I thinking? Leaves were at peak color, daytime temps were between 50 and 70, night time temps between 30 and 50.
Hammock-related notes: Need about 3 feet of 1" tubular nylon webbing to pad ropes at trees. Probably need to break down and get an underquilt before I do this again; they don't spring hard-to-find leaks.
Here are some photos of a couple of campsites. The tarp's up in the first one just to protect me from falling leaves and acorns. :) The second shows the insulator in place and stuffed. The last one shows the leaves in the detached poncho.