The video you see here is one of the first hammock camping videos I shot. In the early hammock camping days I was trying all kinds of things to stay warm. I actually started out with just a sleeping bag and emergency blanket in Winter, those were tough lessons. I stuck it out for sometime before I decided to give my trusty lightweight Thermarest a try.
At this point I am firmly in the underquilt camp… I “tough butted” it through some frigid camping trips, one can do this with a good quality down sleeping bag but if the wind pipes up you’re in foe one helluva uncomfortable night.