When I built my WD12, I followed the construction order in the manual and added the hatch sill components well before fiberglassing the deck. The result was trhat drips onto the sill made seating the hatch unnecessarily difficult. Now, I'm building a Duckling, and I'm thinking of glassing the deck first, then installing the hatch sill components. I can't see a reason not to do it this way. Am I missing something I'll regret later?