I just got my bbdl 1.7 and i love it! but its been cold so i have not used it yet , besides my yard ,new to hanging and i am planning to do a week on the foothills trail in SC starting around or before Memorial Day (end of may)with my brother (he turned me on to hammocks ). will i need to lug a therm a rest pad for insulation or will just a sleeping bag do the trick ?