[tliveright]

I''ve spent the last few weeks on the same mission re exterior cushions. Closed cell foam (relatively hard and dense and floats, no water absorption) and flow through ( no water absorption, softer, doesn''t float) foam seem to be the two most practical choices. Both can be obtained from Sailrite (www.sailrite.com) but are pretty pricey. I happened to find a foam source in Philadelphia that sells flow through. Choices for interior foam are multiple since water absorption is not a major concern. Any foam will do as long as it''s comfortable for you.