Floatation
Al - I did this on my daysailer and it worked well. I went to Home Depot and bought closed cell insulation board for about $10 a sheet. It will not get waterlogged b/c of the closed cells. Then I broke it and and stuffed it into the floation areas. Finally, filled the spaces between the chunks and locked them in place by pour expanding two part foam into the tanks.Be careful not to over do the foam because the force of expansion can break the tanks open!!Justin - O'day OWners' Web