Now back to construction:
Prior to glassing the shell I faired in the vertical underfloor storage sides to the sloping shell panels with West microlight filler. I was not worried about cream colour because bottom paint will be carried up sides @ 9 inches.
When glassing the shell I obtained 60inch wide cloth so that the side panels would be wide enough to also cover my side skirts in a continuous piece.
Then the big flip. I had saved the top portion of the mold to use as a cradle. Cushioned the epoxy finish by applying foam pipe insulation over the plywood edges of the mold.
Then glued on my bottom floor. From West I got an empty caulking type tube which I filled with thickened epoxy. Worked brilliantly for applying an even bead of glue down my dadoes and rabbet joints. So I now have two 3/4 inch floors with underfloor storage between.