Both the Duckworth 21 2011 and the Duckworth Ultra Magnum Inboard Jet 22 2012 are deep-V designs, both built in aluminium, so 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 22 2012 at 22,0 ft. Weight tells a clearer story for trailering families: the Duckworth Ultra Magnum Inboard Jet 22 2012 tips the scales at 3 310 lbs - 510 lbs less than the Duckworth 21 2011 at 2 800 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.

Both boats are rated for 6 passengers - a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.