Hi: HokieEscape...Dan; There are kit$ that you can get like PolyGlo, or Vert Glass that will rejuvinate chaulky fibergla$$. They are usually three step processes and very expensive/labour intensive. A cover that prevents having to do this would be a good idea IMHO!!!
As for re-gelcoating that's like going back to before your egg was hatched.
I'm not looking forward to waxing Our Escape Hatch as the roof is verrry chaulky. I was just up there to replace the sewer vent cap and once the Meguire's is finished, I'm going to add a coat of 303 Aero-Space protector to the surfaces. A cover would have been so much easier even tho we have indoor storage for the $#*^ season(4letter word). The summer sun is a killer
escape artist N.S. of Lake Erie