I won't fly it any time soon but will definitely clean it up. I immediately found yet another thing I should have done. That is, clear coat the whole thing! I did so on the top section and it cleaned up well. But, I can't get the ground-in dirt off the lower section. It's a job for Tide, but it won't fit in the washer. LOL.
Even though the beat up fins are in theory replaceable, I think I'll use the duct tape repair method at least for the first fix-up. I'm thinking about using my new flame pattern duct tape. Which leads me to the possibility of re-decorating the whole lower part to some non-scale like color pattern. If you can't clean off the dirt, hide it...right?