When two boats share the same hull type — in this case both the Donzi 26 ZF 2010 and the Donzi 29 ZF Open 2008 are deep vee designs with fiberglass 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 — Donzi 26 ZF 2010 at 26,6 ft versus Donzi 29 ZF Open 2008 at 28,0 ft. Weight tells a clearer story for trailering families: the Donzi 26 ZF 2010 tips the scales at 655 lbs — 593 lbs more than the Donzi 29 ZF Open 2008 at 62 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 550 hp, the Donzi 29 ZF Open 2008 has a 50-hp advantage over the Donzi 26 ZF 2010's 500-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Donzi 26 ZF 2010 carries 186 gallons versus 18 gallons in the Donzi 29 ZF Open 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 8 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.