Definitely a closed deck!! We had an open bow before and will not have one again! We never used the bow except to get off of the boat on the beach. The closed deck allows you to get out of the weather, take a nap, or spend the night and not to mention a place to throw a few towels, jackets or whatever and not worry about stuff flying out. Also a great place to set up a 6 year old with homework or toys!