Below are some images. All of these can be cut from a 60" wide piece of fabric and have no seams. The downside of no ridge line seam is an "unpretty" pitch at the ridgeline because it rounds out a lot. But as I mentioned in the first post of this thread, it withstood a GA summer thunderstorm, which was pretty nasty. The last thing I was concerned about was how pretty the pitch was.
3 tarps stacked showing coverage. I sleep feet to the left so the asym will be opposite for feet to the right. Shown in "xray mode" so the brown one is actually yellow so the yellow edges are the part of the brown tarp.
purple is 11'RL x 87", slight asym
pink is 10'RL x 102", heavy asym. This one is similar dimensions to a HH tarp
Brown/yellow is 10' RL x 78", very slight asym
The side coverage is pretty close to the same on the 10' and 11' tarps. The main difference is a little extra protection on the ends with the 11' tarp.
It appears the 105" wide pink tarp has much more coverage at the head and feet when laying on the diagonal , due to the more obtuse angle at the head and feet. I haven't mocked that one up yet. My thoughts are I'm gonna have multiple tarps anyway and if I plan on getting a lot of weather, I would rather have a cat cut hex tarp with me. If you're only gonna have only one tarp, it might be a good compromise between coverage, setup and weight for the milder climates.
tarp dimensions. All ridgelines run left to right, although in the pink one it appears not to. Fabric edges are running southwest to northeast. Cut lines are the other edges.
Top view of the 10'RL x 78" wide tarp pitched at a 45 degree angle, storm mode and pretty steep. Person in picture is 72" toe to head. It has more coverage as you reduce the pitch angle.
different view of the 10'RL x 78" wide tarp showing pitch angle. Tarp is 15" above the face of the person. I would drop tarp down onto my hammock ridgeline in storm mode to increase protection from blowing rain.