When two boats share the same hull type — in this case both the Pursuit OS 315 2012 and the Pursuit S 310 2009 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 — Pursuit OS 315 2012 at 32,7 ft versus Pursuit S 310 2009 at 31,2 ft. Weight tells a clearer story for trailering families: the Pursuit OS 315 2012 tips the scales at 11 015 lbs — 2 142 lbs more than the Pursuit S 310 2009 at 8 873 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 OS 315 2012 has a 100-hp advantage over the Pursuit S 310 2009'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 Pursuit OS 315 2012 carries 284 gallons versus 26 gallons in the Pursuit S 310 2009. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 9 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.