I like to seal the inside of the boat, seal the inside of the decks and apply the decks all on the same step. Works very nice. Here is a tip...When applying the deck, put tape on top of the frames so the deck doesn't stick to it. Just glue the perimeter of the boat. If you glue the frames to the deck, after awhile, the deck will sag where there isn't a frame. If you don't glue the frames to the deck, you won't see as much saging, thus making a better looking boat for a longer period of time. This works awesome when using a fiberglass deck (roundnose). Strength is not a problem.
Never glue something to cured glue without first sanding the dried glue away.
Brian