I had Dave Olsen make me a sort-of custom 8 x 8 foot tarp.
The only custom part was to limit the tie-outs to the
corners and midpoints of the edges. I only ever pitch on the
diagonal or square.
My most common pitch is diagonal. On one or two high-wind
nights, I've pitched it as a low A-frame, and it just barely
covers the length of the hammock.
As to the Oware product, it's very nicely made, with uniform
stitching, nice, narrow seams, and thoughtfully reinforced
tie-outs. I expect great service from it.