I have a 27' SeaRay Sundancer that was bottom painted by the previos owner using hard paint. I use the boat in salt water but, keep it in a lift. I would like to repaint the bottom using a "slicker" finish. I was told that there is a new paint on the market (not an anti-fouling paint) that may be used to paint over existng botttom paint. Is anyone familiar with the product? My goal is to improve the fuel economy of the boat. If such a product does not exist, what would be the best product to use to achieve better performance?