I'm not sure what to tell you. If it's trailered, make sure the hull is cleaned and waxed. That will help reduce drag. Growth on the hull will really slow you down. If the boat has foam in the hull, it could be waterlogged, adding lots of weight and slowing you down. If you've got the boat trailered, and find water in the bilge while it's parked, it could be water seeping from the foam.
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