[alarie]

As long as your fit is good, go ahead and glass the top of the deck ahead of time, and cover the plywood edges while you are at it. It is a big area to get glass down on , so having it out of the boat will be much easier. I fully encased my plywood floor in glass before install, and then just taped it in on the edge. If you sand/plane a 4" x 1/8" recess along the edge before you glass it, the installation tape will be nice and flat once installed.