I have added insul-brite to my 3S quilts to extend the temp range. I slide it between the double layers of the hammock. That works better than the pad for me because it is wider and slides around a lot less. It also wraps around me in the hammock, which a pad does not do.
If you are a cold sleeper, I'm not sure that it will get you down to the single digits, but it will work better than a narrow pad.
"I'm a connoisseur of BACON." - Anyways - 6/9/13