Hi Phil, My tarp at the FL hang was a MacCat Ultra (Spinn). I'll post a picture tonight. I cut the guy lines on one side twice as long as the other side. I had the long ones facing toward the lake which lifted up that edge for a view. The short ones were toward the north where the cold winds were coming from, and were staked near the hammock to create a wall of sorts.
I can stake the center guylines away from the hammock while staking the corner ones close in, giving a bit of wrap around effect. It affords some protection, but it's not doors.
I am planning to get a carbon fiber pole to go laterally across the hammock between the two center tie-outs, to form an arch so the living space is increased. I will sew pole pockets on those two tie-outs. The pole from Fibreplex weighs less than 3 oz and costs $50.
"Life is a Project!"