Hi, I recently got this boat. hull#sted6037j788 Its a Skeeter. Someone had already tried to fix the damage on the hull. It seems that there is a very slick black plastic thing that has came through the hull. Is it a support for the deck? Or is it something that the last guy jerry rigged? The deck is on and I cant look or feel it from the top. Any ideas out there about what to do with it? We understand the fiberglass and resin bit, but cant figure out what it is and if we should keep grinding to get it out. hopefully my picture can help. thank you very much--J