Matching a flat Triton Boats 1231 SFB 2009 against a modified vee Triton Boats 18SE 2011 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 Triton Boats 18SE 2011 measures 18,7 feet overall (2011), giving it roughly 7,7 additional feet of deck space compared to the Triton Boats 1231 SFB 2009 at 11,0 feet (2009). Weight tells a clearer story for trailering families: the Triton Boats 18SE 2011 tips the scales at 169 lbs — 160 lbs less than the Triton Boats 1231 SFB 2009 at 9 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The power gap is worth calling out. Rated to 135 hp, the Triton Boats 18SE 2011 has a 132-hp advantage over the Triton Boats 1231 SFB 2009's 3-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Triton Boats 18SE 2011 is rated for 600 passengers, while the Triton Boats 1231 SFB 2009 caps at 2. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Triton Boats 18SE 2011 could be the deciding factor.
Bottom line: Choose the Triton Boats 18SE 2011 if your priority is putting more people on the water — it handles 600 passengers and at 18,7 ft it has the deck room to back that rating up comfortably. The Triton Boats 1231 SFB 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 2 that costs less to run day-to-day.