What hammock are you trying to cover? I made a minimalist tarp for my WBBB with only 4 yds. of 67" wide 1.1 silnylon. it's not the tarp to take on an expected wet trip, but it saves weight when it's not supposed to rain and will keep the hammock dry. I'm now mostly using a larger hammock and that tarp won't get the job done.
"Life is a Project!"