When two boats share the same hull type — in this case both the Contender 21 Open 2009 and the Contender 31 Fish Around 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?

Size is the most obvious dividing line here. The Contender 31 Fish Around 2009 measures 32,5 feet overall (2009), giving it roughly 11,3 additional feet of deck space compared to the Contender 21 Open 2009 at 21,3 feet (2009). Weight tells a clearer story for trailering families: the Contender 31 Fish Around 2009 tips the scales at 1 145 lbs — 790 lbs less than the Contender 21 Open 2009 at 355 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 Contender 31 Fish Around 2009 has a 300-hp advantage over the Contender 21 Open 2009's 300-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Contender 31 Fish Around 2009 carries 245 gallons versus 9 gallons in the Contender 21 Open 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 Contender 31 Fish Around 2009 is rated for 9 passengers, while the Contender 21 Open 2009 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Contender 31 Fish Around 2009 could be the deciding factor.