Matching a modified vee Duckworth 723 2011 against a deep vee Duckworth Ultra Magnum Inboard 22 ft. 2008 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 723 2011 at 23,0 ft versus Duckworth Ultra Magnum Inboard 22 ft. 2008 at 22,0 ft. Weight tells a clearer story for trailering families: the Duckworth Ultra Magnum Inboard 22 ft. 2008 tips the scales at 331 lbs — 314 lbs less than the Duckworth 723 2011 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.
For family outings this is probably the sharpest distinction between the two. The Duckworth 723 2011 is rated for 7 passengers, while the Duckworth Ultra Magnum Inboard 22 ft. 2008 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 2011 could be the deciding factor.
Bottom line: Choose the Duckworth 723 2011 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 Ultra Magnum Inboard 22 ft. 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.