I have a 1987 Cimmaron bowrider (which by the way, if anyone has any info on these boats I would love to hear it.....I have NEVER seen another Cimarron like mine) anyway, right in front of the engine there is an opening about 20 inches deep and about 36 inches wide, it slopes deeper as it goes back to the transom. I think this is called a spashwell, but i don't really know if it is a necessity. When the boat is in water, this area fills about half way with water. There is a plug hole at the rear of the splashwell, some people are telling me to plug the hole and some others are telling me to leave it alone. I am not talking about the hole in the bottom of the hull. The plug hole is the same size as the drain hole in the bottom of the hull.<br />any ideas will be appreciated. This is a link to my hompage, there is a few photos of my boat here, maybe these pictures will help.<br /> http://www.jeepinbums.20m.com/photo2.html