Just read your message regarding restoring your Barefoot Falcon. I have a 1991 Barefoot Falcon with exact same floor issues. I also had to replaced the stringers and am in the process of replacing the floor. My question is regarding the need to replace the foam. Like you I have several hundred pounds of saturated foam removed and I am not certain to replace it or leave it without foam. Do you are anyone know if the foam is necessary for any structural support, or is it just for sound and flotation?