Be aware of the small-vessel regulations pertaining to engine power and load capacity. Federal law mandates that boats of less than 20 feet in length must have a capacity plate in the steering or helm area. As a boat owner or operator, you should know the recommended gross load capacity that can be safely carried in the hull concerned:

It is indicated on a capacity plate, which, when fitted, is permanently attached to the pleasure craft.
It is indicated with the “equivalent number of adult persons.”
It includes the total weight of persons, equipment, stores, fuel, engine assembly and steering controls.