- Stock #352188 - Great Deck Boat! Low Hours! Sporty, Spacious and Ready for some Fun in the Sun! This 21 SPX is great looking and designed for all-day fun with family and friends. Whether you fill your day with watersports activities or just some leisurely cruising, this is the one for you. She is powered by a Mercruiser 4.3L MPI engine with 220 HP and an Alpha One drive. Her spacious interior can accommodate up to 12 persons and gear. Included with the sale is a 2016 Sea Ray tandem axle trailer with a foldaway tongue by Shoreland'r. If you are looking for some fun on the water this su... read more