When two boats share the same hull type — in this case both the Duckworth 21 2011 and the Duckworth Ultra Magnum Inboard Jet 24 2013 are deep vee designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — Duckworth 21 2011 at 21,0 ft versus Duckworth Ultra Magnum Inboard Jet 24 2013 at 24,0 ft. Weight tells a clearer story for trailering families: the Duckworth Ultra Magnum Inboard Jet 24 2013 tips the scales at 372 lbs — 344 lbs less than the Duckworth 21 2011 at 28 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 Ultra Magnum Inboard Jet 24 2013 is rated for 7 passengers, while the Duckworth 21 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 Ultra Magnum Inboard Jet 24 2013 could be the deciding factor.