Good morning Commodore! And thank you for all of the above, especially the education on the tumblehome. I've since found this piece over at fiberglassics.com and it appears to be what I now own.
I gave her a good pressure washing last night and found remnants of a light blue color underneath (similar to a Miami Dolphins blue, with apologies to this boat). Once cleaned I was able to see that this boat is structurally rock solid, with what appears to be an original transom, benches, and support members throughout. It would appear that the foam flotation is original as well and not even waterlogged which surprised me. I was told the boat has been on the same lake here in Central Florida for decades, powered by a trolling motor, so I'm starting to believe that. I think I'm going to sand her down enough on exterior to create a primer surface and see if I can repaint her close to matching the original blue.
Any more info / insight you come across would be welcome of course.