All three, tarp, tent, and hammock can be carried at once and be under 4 lbs total. I carried a three man tent for 35 years that weighs more, because it is what I had, and works solo or with family/friends. Sitting out a rain storm, cooking under a tarp, works great for a minor weight penalty. Hammock is a nice change when its warm and can be put up many places a tent or tarp cannot. Ultralight gear is the best thing that ever happened for those of us who don't mind carrying a "heavy" pack. Versatility allows comfort which makes staying out of town more appealing. A tarp can be had for the price of one night in town and weighs practically nothing.