How to mount panels to a '67 airstream?

[wrybread]

[sorry for the double post, reposting with a more specific subject line]

I'm helping someone install solar panels on the roof of her 1967 Airstream. She expects to live in it full time for a few months a year, so she wants something reasonably powerful, probably in the 500 to 600 watt range.

I've done a bit of searching through the posts here and I'm not seeing any systems that powerful, though granted I could have searched harder. Hopefully I'm not overlooking anything obvious.

Ideally I'd love to use grid-tied type panels, meaning 250 to 300 watts, about 36 volts each. Obviously we'll be using an MPPT charge controller. For aesthetics and weight, I was thinking maybe frameless panels might be a good idea? Note that that's different than flexible panels, they're just regular panels minus the frame.

We're very knowledgeable about solar in general, just stumped on mounting it all to the Airstream's curved and (I think) fragile roof. I've read that the skin on the Airstream is .032" (0.8mm) thick. So:

- how to attach the panels?

- use the frame (rivet lines) I'm guessing?

- any particular mounting hardware that works well on an Airstream?

- any tips on where to run the wires into the trailer?

- or maybe she should consider flexible? If so, are there some good high powered flexible panels to consider? Given their relatively short warranty period I'm guessing they're not very robust, but if that's the only option, any tips on brands?

- I've read that the rivet line has a 250 pound weight limit, is that true with the '67 too?

Thanks for any help.