I have not tried it, but it should work.... I have a dozen shells that have not been used..... I am thinking a sheet of 2" foam, trace the shell, drill some small holes along the lower edge of the shell and use some roofing nails pushed into the foam.... Add a keel with some weight to the foam. Maybe some luan bonded to the foam? Humm... have to think this through this week. What have others done?