Re: Alone The First Time Out It looks like you aren't using any insulation under your bag. I'm assuming your rear was rather chilly. To start, you could go cheap and buy a blue walmart CCF(closed cell foam) ground pad for in the hammock. If you have money, you could go for an underquilt. If you want a cheap alternative to an underquilt, modify your bag to fit over your hammock(grand trunk has a good model so you can copy that) or use a Garlington Taco(look that up).