There were a few companies that made pyramid type tents which were basically 7x7 square with but a single pole up the center..I found you could use your hiking staff in place of this pole thereby carrying only the nylon body of the tent and the fly...Also some of the smaller 1-2 person tents are so light I`d think twice about going to a tarp just to save the .5-1 pound of weight...Just for the record I designed several hammock type tents..hammock/fly designs almost 25 years ago and almost all the major backpacking tent companies laughed at me...I also designed a ground pad/therma-rest pad/bivy tent which was all in one piece they thought was dumb also...My only design that went over was the idea to place 2/3 of the sleeping bag filling on the top of the bag since what was under you got crushed anyway..That way a bag could have the same weight but greater warmth or less weight and equal warmth..I`m not sure who does that now but back when I suggested it no one was doing it that way