Actually the inner hull foam in question is below the floor of the bilge area and with out installing the drain shown in the picture that putershark posted there is no way to get the water out. I know I have a water prob there because last summer I developed a small hole in the floor of the bilge and had water coming in causing the bilge pump to kick on when ever I got on the boat. The factory guy that came to mack fest last yr welded the hole shut for me and that stopped that untill just recently. I suspect that the extremely cold weather we had in nov and dec froze the water in the inner hull and caused another leak into the blige area because my bilge is kicking out water every 10-15 min while I am on the water.. I hvae the stainless drain to install but not the courage to install it.. go figure.. I have no problem dealing with jerks with guns , but am afraid to drill a hole in my boat.