I slept in my Expedition with my new Super Shelter last night.
~58-56*F the whole night
I was in my basement! Pretty good controlled environment for a first try.
First the good stuff - I slept comfortably, without hassle. Really enjoyed having the bottom insulation OUTSIDE! Aside from bathroom breaks, I slept soundly and didn't wake to do more than roll over and go right back to sleep.
Now... I was a bit chilly. Only a tiny bit. I wore only a base layer of cotton long johns and wool socks. I started with a DIY fleece top quilt, then moved to a 30*F mummy bag opened in top quilt mode, and ended with the mummy bag zipped up and the fleece draped over (probably would have been more efficient were it inside as a liner).
The "major" symptom (like I say, only a very little bit chilly) was a bit of a chill down my spine. To be honest, I wasn't sure if it was a chill from losing heat or a chill from a trickle of sweat. I could never really feel moisture on my back, but it was an odd sensation - feeling the warmth radiate back to me all over, and having that little chill on my spine.
To head off a few of the simpler questions: I did check on the insulation within the super shelter. I verified that the foam pad was in place and that the space blanket was in place on top. The foam pad had the "bumps" facing up towards the hammock.
So: How do you figure I should go about trouble shooting this? I am already planning on picking up a pair of wool long johns which ought to be both warmer and, due to wool's properties, less susceptible to small amounts of moisture. Think that is enough? Should I be thinking about adding another layer under the foam pad? I wouldn't have thought that I'd need to add insulation at 56*F. I've read that it's best to wear a thin, quality base layer to bed... but is that thinking wrong? Should I get a fleece shirt and pants to wear as well?
I'm planning on attending a winter hang in a few weeks, and having a little chill at 56*F has me nervous, as it will likely get into the single digits!