I appreciate everyone's input. Whatever you post is certainly correct for you, so I don't mean to be argumentative. I'm just trying to avoid spending a lot of money only to find out I'm freezing at night unless I significantly increase the base weight of the gear I'm carrying. I am originally from PA and am well acquainted with staying warm in the winter in a tent on the ground. Georgia is a little different. There is a frost warning here tonight. Two days ago the low temp for the night was 50 degrees. My tent, sleeping bag and ground pad for those two temps would be the same sleeping on the ground. I might pull on a wool hat tonight if was up in the mountains sleeping on the ground. Temps here in the Spring and fall are unpredictable and I don't want to carry a lot of extra weight to be prepared for a 30 degree night when it might be 50 degrees. I'm just trying to learn and determine if hammock backpacking will work for me. It seemed from comments I've read that the enclosed space in the clark adds about 10 degrees to the outside temp .... don't know. I am not prepared to spent a lot all at once. I thought I'd start with the basics and add a little at a time.