A couple weeks ago I spent 3 days grinding/sanding the old bottom paint off the hull. All eight layers worth. Blessed to have cool weather, the job went smoothly. In the picture, the gray is an epoxy I painted on to prevent gelcoat blisters.
The white upper topside is also an epoxy coating. A primer, made to seal the pores in the old gelcoat, it covers the hundreds of small repairs I made where years of charter use had left dings and scratches. This coming week I will be painting the topsides with a new paint from Interlux.  I will let you know how it turns out. We expect to be finished with the painting by next weekend.