Re: What do you use as a lightweight ground cloth in your floorless shelter?
Take a look at "Backpacking Light" and read the forum for a while. Then sign up for the forum so you can join the discussion. You will learn what to buy and, just as important, what not to buy.
If you want to be able to read the articles and see the videos ya gotta pay $25./year. Worth it to me.
This site has the best info on how to lighten your pack and still be comfortable in camp. Pack light, eat well, sleep well and stay dry.
Remember, if your scoped rifle and, say, 10 rounds of ammo weigh 10 lbs. that's a lot of extra weight on top of maybe 30 to 40 lbs of other gear in your pack. I can go for 7 days with a 35 lb. hunting pack PLUS my 9 lb rifle and ammo. In deep winter that pack weight goes up 5 lbs.
"There are no comfortable packs, only packs that are less uncomfortable than others."