Yea, the fiberglass surface was "hairy", with little bits sticking up.
That was from 20 years of being sandblasted in the desert.
He repainted the dish, and as you can see, he painted the mount.
Use the "Advance Search" feature and look on the forum for the thread where he discussed his work.
Just realized, his is 8' and yours is 10', but still there should be similarities.
Also, ACradio has experience with these dishes (if I remember).
I believe his signature has a link to his picture gallery (off site) with a bunch of ChannelMaster BUDs.
He has commented on big fiberglass dishes, and maybe even some commercial dishes, having some sag to them and performing like smaller dishes.
I just don't recall what brand he was discussing at the time.
Sorry to not be more specific, but I don't have the dish.
I'm just recalling what I've read here on the forum over the years, and it does all run together.