Boy that looks nasty!
This is the surface of the hatch, the gel-coat was completely rotted in several places and had to be completely removed before resurfacing.
An old repair that had used automotive bondo.
Same corner of hatch after much sanding, scraping, filling , sanding and filling again.
Still got a little way to go but almost there.
Inside of hatch with wood frame-work (all Mahogany) removed. I will be sanding frame-work down, staining, and epoxying it in place, then prime and paint all of the other surfaces.
The big picture, outside just needs a little fine tuning.