Two layers of rocker panels on Spitfire?

[jw@mail09.mitre.org (Joe Whalley)]

My newly running 72 Spit has a decent body, except for both rocker panels.
They are totally shot under the hood latches. Poking at one, it disintegrated
but there seems to be a fairly intact panel under the rust, with a layer of
bondo in between. Is there some sort of cosmetic coverup for forlorn rocker
panels available? Is there a replacement for this sheet metal that could be
installed without welding for the time being?

Thanks - Joe