I come back with this topic especially that it was now mentioned by Nate.
I was using this setup for over 3 years now in all seasons except winter.
I've had an unsuccessful attempt last winter, when after 3-4 hours of
sleep in the hammock I was forced by the cold to enter the tent.
But I didn't give up and this year I've tried again initially wanting
to try out a hammock sock.
The sock was made from a non-breathable material and at midnight I
woke up all wet. But I was not cold and I just pushed the sock down
and continued to sleep till morning.
I have tried to explain what was the difference between the two nights
and found the following:
Mistakes in the last winter:
- dress up too much: don't fit in the sleeping bag; the (down) bag
doesn't have space to expand properly;
- exhaustion: the night came after a long ascent in the deep snow;
what energy was left in me wasn't enough to keep me warm;
Improvements this year:
- dress up much lighter (shorts and T-shirt) allowing the sleeping bag
to expand and do the isolation;
- an additional effect of dressing light is that I had more room in
the bag and was able to cover my head with the hood of the bag (like I
do in warm weather). In the hammock I am sleeping with the back of the
bag over me (the hood over my head - I don't get condensation because
I sleep on the side and breathe through the hammock, not in the bag).
I slept several nights this winter in the hammock and realized that
one must *learn* how to sleep in a hammock. It is not something
straight forward, and the comfort improves with trial and error.
The only week spot I fond this year is around my neck under the
hammock where only the hammock and my shirt was between me and the
outside (the hood was covering my head from above. Next time I will
make a pillow from the clothes I don't use to cover this area.