When two boats share the same hull type — in this case both the SeaArk 2072 Pro (SC) 2008 and the SeaArk Stealth 170 2013 are modified 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?

Size is the most obvious dividing line here. The SeaArk Stealth 170 2013 measures 17,2 feet overall (2013), giving it roughly 15,2 additional feet of deck space compared to the SeaArk 2072 Pro (SC) 2008 at 2,0 feet (2008). Weight tells a clearer story for trailering families: the SeaArk 2072 Pro (SC) 2008 tips the scales at 875 lbs — 732 lbs more than the SeaArk Stealth 170 2013 at 143 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 140 hp, the SeaArk 2072 Pro (SC) 2008 has a 65-hp advantage over the SeaArk Stealth 170 2013's 75-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The SeaArk 2072 Pro (SC) 2008 is rated for 11 passengers, while the SeaArk Stealth 170 2013 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SeaArk 2072 Pro (SC) 2008 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The SeaArk Stealth 170 2013 comes in at 2 lbs per hp versus 6 lbs per hp for the SeaArk 2072 Pro (SC) 2008. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.