HF has a 3 panel kit, I have 1 panel now I used intelocking type velcro to mount it when needed to front window protector( I can get some angle if needed)
I was thinking of putting 4 up on the up on roof,I dont want to bother setting them up every time.
On the roof it will also maintain battery when not in use.
I dont dry camp to often and could find a partial sunny spot if needed
I just dont want to put screws in the wrong place.
One thought I had was to put 2 presure treated 1/2 inch plywood panels(big enough for 2 SP panels each) to both sides of crank vent mount and glue down with a bead of sealant and use the 4 inch bond rv tape all around and not use any screws.
I would screw the pannels to the plywood
using either tapered moulding or glass hanging type clips.
I dont think it would blow off but im reluctant to do it that way if theres a more secure way.