polyurethane foam

change all entries having to do with Hobie, Clark, and foam: Hobie didn't get his first look at polyurathane foam until '57; he and Grubby's "skunkworks" period I think only lasted for 6-8 months before their foam boards were on the market Light, rigid, gritty, chemical- based material molded into ready-to-shape surfboard shaped blanks; the core element for the vast majority of surfboards produce...