Matching a tunnel Shallow Sport 21.5 ft. Sport 2009 against a tri-hull Shallow Sport Latitude 27 ST 2009 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
Size is the most obvious dividing line here. The Shallow Sport Latitude 27 ST 2009 measures 27,0 feet overall (2009), giving it roughly 6,0 additional feet of deck space compared to the Shallow Sport 21.5 ft. Sport 2009 at 21,0 feet (2009). At 1 lbs and 35 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 300 hp, the Shallow Sport Latitude 27 ST 2009 has a 100-hp advantage over the Shallow Sport 21.5 ft. Sport 2009's 200-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Shallow Sport 21.5 ft. Sport 2009 carries 43 gallons versus 15 gallons in the Shallow Sport Latitude 27 ST 2009. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Shallow Sport Latitude 27 ST 2009 is rated for 11 passengers, while the Shallow Sport 21.5 ft. Sport 2009 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Shallow Sport Latitude 27 ST 2009 could be the deciding factor.
Bottom line: Choose the Shallow Sport Latitude 27 ST 2009 if your priority is putting more people on the water — it handles 11 passengers and at 27,0 ft it has the deck room to back that rating up comfortably. The Shallow Sport 21.5 ft. Sport 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.