This is something Ive wanted to try. I did win a few small 5 and 10 watt framed panels online and first thought was to incorporate them into a wing.
Plan B was that an 85 watt panel I had could be attached and used as a wing. Turns out it was like a few inches too big. Plan B was to mount the panel to the hood high center near the windshield or even on the dash behind the windshield away from the air bags.
Then I got to thinking maybe I should wire 2 5 watt panels in serial to ensure it will charge even in low light and that 10 watts would not be enough to over charge or damage a group 51 battery. I got a mppt controller, but its not waterproof, so it would need to mount inside and then I had to run wires, etc.
So, they sit in a box til I can figure it out or just run with it. May just run with it putting 2 on the hood of the insight in serial and use 3m red double sided tape to mount them.
Then use the other panels for the sidekick and mount them in a similar manner. It has a group 24 deep cycle battery.