Starting a mockup of a styrofoam tank. Thanks to a neighbor throwing out a boogie board, i got a pretty good jump on it. Still have some adding and shaping to do, as i wanted to build more of a board track look, but didnt really want to hide the cantilever frame. So i used the original tank theme, just a little larger. We'll see where this goes. What is the best/most cost effective way to seal the styrofoam in preparation for laying the fiberglass? I will probably doe the Acetone melty thing, but i'd prefer not to melt the styrofoam BEFORE making the tank!!