We kept pouring and packing until we got to the top of the backsplash then cut the cap into 3 pieces
and taped the lowest piece in place then moved to the sides pouring and packing as we went until we got level with the top of the sides and poured and packed and taped to keep it all in place. Oh don’t forget to tape under the backwash for escaping resin.
This is the cap after leveling with cloth and resin, so to not have cracks between the different hull molds.
I have to see what happens with the cleanup of adjacent areas before deciding on paint or Marine-Tex.