This is something that would work but it's a lot of work. The picture is a sailboat mast I made filled with blue building foam which is closed celled and water proof. Pink building foam is the same thing. I would twist and push the tube through the foam until a piece was lodge in it, them push it to the other end with a pole. I did this until the tube was filled.



Last edited by John Monroe; 08/17/12 02:11 AM.