I have always glassed one side, then cut out a thin strip of foam on the trailing edge and replace it with the flox mixture and then covering that side.
See N64KR at http://KRBuilder.org - Then click on the pics See you at the 2012 - KR Gathering in Mt. Vernon, Il MVN 40th Anniversary There is a time for building and it is over. Daniel R. Heath - Lexington, SC -----Original Message----- I would suggest cutting out the damaged area with a dremel, removing the foam down to the skin on the opposite side, glue in a solid block of foam to fill the void, and glass repair the area.