One night, I used my Big Agnes Insulated pad with a fleece blanket in August at 3,000 feet. I slept amazing. Then in September I thought temperature would get colder at higher elevation, but it only dropped to 42 degrees. I had my quarter zip 15 degree bag (only sleep bag I have) and the insulated pad. I was miserable... I kept getting too hot when I got comfortable, and the shifting was ridiculous. If I use the pad again, I would consider using a quilt.. I know it not the same as a Neoair, I just thought it be similar to my experience using a pad. If you had a dual layer hammock, pad might be a lot more functional. I haven't tried it that way since I'm wanting to make my own single layer hammock with under and top quilts.
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It is one of the blessings of wilderness life that it shows us how few things we need in order to be perfectly happy.-- Horace Kephart