: Hmmmm...maybe I didn't make myself clear. I'm not putting a strip
: of glass down the outside seam. ( Yes, I'm putting a 3"
: wide strip on inside). Instead I'm laying the glass over the
: deck and letting it drape down 2" onto the hull. That
: overlapping becomes my OUTside seam. When I put on the fill
: coats...I plan on going down 1-2" farther each time to
: feather the overlap. Same with Varnish. Just want to avoid a
: strip on the outside.

So you're not laying glass on the deck until you're joining the halves? How about cutting out your hatches/making hatch 'lips' before joining? Seems much more difficult.