Sounds like a fun puzzle! The trick is to keep the weight off the main frame so the shelter stays steady. I’d start by using a lightweight aluminum or carbon‑fiber frame for the panels—just the size of a small tablet. Slip that onto the roof and fasten it with sturdy Velcro so it can be slid off if the wind picks up. Add a small, reflective tarp around the edges to funnel light toward the panels, and use a lightweight battery pack that’s tucked under the floorboards. That way you keep the bulk low, keep the shelter stable, and still get your solar juice—night or day. If you need a quick test, just set up a 2‑step rig and watch the numbers roll in. Good luck!