Fiberglass tube restoration

I thought I would begin restoration of my circa 1980 10" Cassegrain by replacing the Parks tube which is now yellowed, stress-cracked, and filled with unused bolt holes. Being put off by the price Parks now wants for a new tube has put me into restoration mode, but I am not sure how to procede with filling the bolt holes so they won't show through a new paint job. Also, I haven't a clue what the recommended procedure is to restore the surface to a new deep glossy blue. Looking for some experienced help. Thanks.

Bob Schnitzer
Grenville Base Observatory

Attached Image:

Take a hint from Fiber boats:
1. Marine Tex epoxy with color add (match as close as you can)
2. Primer
3. Sand
4. Final paint