When two boats share the same hull type — in this case both the Pursuit OS 255 2011 and the Pursuit S 310 2013 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?

Size is the most obvious dividing line here. The Pursuit S 310 2013 measures 31,2 feet overall (2013), giving it roughly 3,9 additional feet of deck space compared to the Pursuit OS 255 2011 at 27,3 feet (2011). Weight tells a clearer story for trailering families: the Pursuit S 310 2013 tips the scales at 889 lbs — 828 lbs less than the Pursuit OS 255 2011 at 61 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 600 hp, the Pursuit S 310 2013 has a 250-hp advantage over the Pursuit OS 255 2011's 350-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Pursuit S 310 2013 carries 26 gallons versus 13 gallons in the Pursuit OS 255 2011. 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 Pursuit S 310 2013 is rated for 9 passengers, while the Pursuit OS 255 2011 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Pursuit S 310 2013 could be the deciding factor.