I use a hammock when I camp (unless terrain dictates otherwise). The weather expected for SC during the upcoming weeks will be warm, I suggest a very lightweight blanket to place under you (inside hammock) and over you if you get cool. Personally I don't use a blanket at all under temperatures drop below 70, then I just sleep on top of my summer down sleeping bag.

For winter camping I use a Big Agnes sleeping bag (which has no insulation on the bottom), and I use two foam pads inside the hammock. One is thin but wide and deep (40x60), and the other is more traditional 20x72 but 1" thick. A few months ago I was warm in 18F with that combination. As noted above under quilts are in vogue, but expensive and not required to stay warm as I demonstrate above. Here's a link to hammock insulation forum:

http://www.hammockforums.net/forum/f...splay.php?f=88

with specialized sub-forums on pads:

http://www.hammockforums.net/forum/f...splay.php?f=10

and under quilts:

http://www.hammockforums.net/forum/forumdisplay.php?f=9

A benefit of pads is weatherproof durability and lightweight. My two pads together weight 20oz, but I use my wide pad (40x60x1/4) for weather into mid-30F and it weights only 6oz.