Hey guys, I am making an synthetic underquilt for my DIY speer hammock. How much insulation would you recommend? I am very tall and thin, and tend to sleep cold. The coldest I would ever take my hammock out is somewhere in the high teens, or mid 20 degree range. (The weather in GA is pretty darn nice most of the time!) I want to be comfortable, but I dont want to carry any more pack weight than I have to. Any suggestions on using a underquilt and other techniques that work together to boost the insulation value? Thanks for the help!