When two boats share the same hull type — in this case both the Duckworth 23 Ultra Magnum Inboard Jet 2009 and the Duckworth Navigator Sport 20 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 23 Ultra Magnum Inboard Jet 2009 at 23,0 ft versus Duckworth Navigator Sport 20 2013 at 20,3 ft. Weight tells a clearer story for trailering families: the Duckworth 23 Ultra Magnum Inboard Jet 2009 tips the scales at 361 lbs — 345 lbs more than the Duckworth Navigator Sport 20 2013 at 16 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 Duckworth Navigator Sport 20 2013 tops out at 15 hp. Engine specs for the Duckworth 23 Ultra Magnum Inboard Jet 2009 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Duckworth Navigator Sport 20 2013 carries 42 gallons versus 8 gallons in the Duckworth 23 Ultra Magnum Inboard Jet 2009. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Duckworth 23 Ultra Magnum Inboard Jet 2009 is rated for 7 passengers, while the Duckworth Navigator Sport 20 2013 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Duckworth 23 Ultra Magnum Inboard Jet 2009 could be the deciding factor.