Looking for a bug net to use my Gatewood Cape (yes, there is the mating bug net from SMD @ $130), and as a stand-alone fair-weather out-under-the-stars bug net. The Gatewood is the real shelter, with the bug bivy as add on in bug season with a bathtub floor to boot.
I was really working my way up from the bottom, with the Slumberjack just because it was cheap, and the OR because I trust their stuff more than Slumberjack, and the Bear Paw because the design works for my purposes and the price was right. Compromise!
What would be cool is to have a liner for a poncho tarp lean-to that is like like a right angle with the outer vertical wall of silnylon and the inner angled wall of screen. Entry would be through the end. It could hang from two guy lines run from the trekking poles down the lean-to roof and staked down. It may need a V of line from the poles to hold the center up, and/or vectored down and out a bit. Those extra guys would help stabilize the poles without too much complexity. Another way would be to have side guys on the poles and short lines to the apex of each end of the inner tent. The idea is to get the top edge of the vertical wall in under the overlapping poncho roof.
The gain is to get a simple light addition to an off the shelf poncho tarp, or it could be used with any flat tarp. It would be a double-wall tent on the slope side and single-wall on the vertical side. The bottom corners could shock cord to the poles in front and to the same stakes that hold the bottom edge of the lean-to roof down. The vertical wall (front)side could actually be tipped out a bit at the top, giving more shoulder room when you sit up and less chance of brushing the fabric if there is condensation. So it would be a slight scalene triangle in cross section than a hard right triangle. I would think the length should be close to 6'6". In my vision, the outer ends would be solid silnylon with a zippered door on one end. Windows might be nice. There should be plenty of ventilation with the sloped wall of all mesh.
Please forgive my q&d diagram. My idea as seen from the "left" end in cross section:

A more complex design could have a big double door right out the front with zippers and/or bug net doors— rather like the MSR Missing Link shelter, but utilizing the poncho for the back wall. It would be heavier, more complex and more expensive.
