Hi... I'm new to this forum and to hammock camping. I actually just bought a HH Backpacker from one of the members here this week. We have a trip planned up in North Georgia in October and the whole under insulation has me concerned. I've read a little about DIY underquilts out of poncho liners and old sleeping bags but I haven't really seen anything about using a down comforter (made for a bed). I did a search on my local craigslist and see a few for sale for $20 or so. Can these be used or are they too heavy?