overlap the hull/deck joint
: by an inch when they are joined? Seems like it might look better and be
: less work than feathering all those edges.

I did something similar on my S&G. While I did use abrasion patches on the bottom of the hull, I overlapped the fiberglass for the deck by about 2" over the joint between deck and hull. So far it worked out well, even though there is a fairly sharp corner to overcome with the glass.

Angela