vrice. The 356 length and weight issue are attributed to the inclusion of the moulded in swim platform. Also...becasue the hull was actually lengthened as well, they had room to put a 118 gallon auxiliary fuel tank in the platform. The 355/356 are also a better riding boat due to the aforementioned extra hull length, they carry the same footprint of the 390/400/404 cockpit motor yacht