Here s a mockup i made.
Slide out solar panel.
Have panel 1 flat mounted on the roof with a raised stand.
Which means the solar panels have to also have t slot track.
Then under it a 2nd panel that slides sideways and then the outer edge can swing down aiming it at the sun on that side.
Slide out solar panel turns that tight space underneath your roof rack or basket into a useful location to house solar panels.
These slide out solar panels are designed to completely come out beyond your racks to avoid shadowing.
Sections 13 17 18 and 22 of the ul 2703 standard of mounting systems clamping retention devices ground lugs for use with the flat plate photovoltaic modules and panels approved 2015.
They are also australian made and operate on our 100kg base mount drawer slides so you can literally hose them out when clogged with sand or mud.