I don't know, but I imagine it can hold quite a lot of water. And water in the inner hull can contribute to the problem. Has it always performed that way? Have you had it since new or did you buy it used?\n\nIt's probably a combination of engine height, prop and use or lack of use of trim tabs.\n\nSometimes it can be exhaustive texting back and forth to help resolve the problem. If you like, I'd be happy to talk over the phone about the things I did to make mine perform.\n\nYou can always look back at all of my posts and follow how I went from rather poor performance to pretty happy.