I highly recommend "Gorilla Glue." It's a waterproof polyurethane adhesive
that bonds just about anything. The only drawback is that it's important
that it be clamped or weighted down for a few hours after joining. It's
great stuff.

--Mike

wrote in message
oups.com...
There was a piece of hard flat floation foam which came loose from
under the rear deck area of my fiberglass boat. Can anyone recommend
what I should use to attach this piece back in place?

Thanks, Mark