Matching a deep vee Duckworth 18 Sport 2011 against a modified vee Duckworth 723 2010 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.
On paper these two are close siblings in the size department — Duckworth 18 Sport 2011 at 20,3 ft versus Duckworth 723 2010 at 23,0 ft. Weight tells a clearer story for trailering families: the Duckworth 18 Sport 2011 tips the scales at 1 455 lbs — 1 438 lbs more than the Duckworth 723 2010 at 17 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 250 hp, the Duckworth 723 2010 has a 135-hp advantage over the Duckworth 18 Sport 2011's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 42 gal and 42 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Duckworth 723 2010 is rated for 7 passengers, while the Duckworth 18 Sport 2011 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Duckworth 723 2010 could be the deciding factor.
Bottom line: Choose the Duckworth 723 2010 if your priority is putting more people on the water — it handles 7 passengers and at 23,0 ft it has the deck room to back that rating up comfortably. The Duckworth 18 Sport 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.