Don't let a cold back or buttocks keep you from sleeping overnight in you hammock. Throw that pad in and get on out there to the Backwood Hood.
More than likely you already got pad laying around or iff'n you don't then there are some really affordable Closed Cell Foam pads out there.
All secure in sector seven,
Shug
Shug's Swag Mercantile....http://teespring.com/stores/shugs-swag-mercantile
ENO HotSpot SPE....http://www.rei.com/product/830279/eno-hotspot-hammock-sleeping-pad-wings
Thermarest Prolite pad...http://www.rei.com/product/829820/therm-a-rest-prolite-sleeping-pad
Gossamer Gear Thinlight Foam pads....http://gossamergear.com/thinlight-insulation-pads.html
Closed Cell Foam Blue pad....http://www.rei.com/product/848717/blue-foam-pad-regular
REI Stratus Air Pad....http://www.rei.com/product/870758/rei-stratus-insulated-air-sleeping-pad
Dutch Hammock.....http://www.dutchwaregear.com/11-ft.-netless-hammocks.html