Morris,
I've used the services of both Viva and Performance at T-Bird Marina for bottom paint, epoxy barrier coat, fiberglass and general work for over twelve years. Viva is usually a bit cheaper but of equal quality. Check with your local marina’s service yard and look in the "marina blue pages" (free at most marina offices and stores), Pacific Yachting or even the telephone yellow pages. It depends probably where you are moored and how big/complex the work you need.
s/v Jalepeno