Thanks for the replies.
I have been looking at the Aurinco 58W solar panels. They are not cheap but browsing through some of the "cruiser" marine forums they seem to be highly regarded. They are very thin, semirigid, can bend slightly and are mounted on anodized aluminum.
The panels are mainly sold for marine applications, but if you browse their installation pictures, you will find a picture of some on a SMB. I like the size, would fit in between the mounting bolts on top I think.
I was thinking of just splicing into my old Solara wire and running through my Blue Sky 2000 controller, but not certain that it is compatible?
Here is a link to their website if you are interested (Anacortes, WA):