Shoot...I routinely used one of those Golite silnylon poncho's as a tarp for ground camping just to save weight in my backpack. They are quite nice and flexible.
HOWEVER, since switching to hammock hanging, I decided to with the Wilderness Logics "Big Daddy"- 130" (10'10") x 115" (9'7") so to me that is massive. It only weighs around 13oz before adding lines but I really enjoy the extra width.
I found myself just enjoying the size of the Daddy..as many have said, personal preference.
It's usually about counting ounces for me but I am happy thus far with a total of 35 ounces for my Hammock/Tarp/suspension/lines weight.
Go Your Own Way