With the frame re-jigged you can see the re-run at
https://www.youtube.com/watch?v=CIfQIuxer0Y and though it appears worthy of further examination, experience suggests it will take some doing to perfect the underside. There are a few wrinkles here that may yet require the sheet to be pre-formed by heating prior use in order to literally iron things out. With a drone to develop (see previous) a way forward with this is an inverted frame like that here, upon which different material can be tried out. At least it didn't implode like the previous...
