: The only thing I would offer since it is a S & G is just fill
: the indentation with epoxy and forget the glass - it's not
: needed. Cut out the bubble, feather the edges and sand the
: blister area and flood it with epoxy to level it. I think trying
: to do a little glass patch will only create more hassle and you
: gain nothing.

Over the course of the winter with the boat hanging in the garage, "the bubble" has now become a string of bubbles about 8 inches long and 2 inches high. It has edged up the hull underneath the seam strip (if that's what you call it) and perilously close to the deck. Something has to be done fast, but I won't be able to get to it for a couple weeks.