Both the Fountain 31 CC 2010 and the Fountain 38 SFC OB 2011 are modified-V designs, both built in fibreglass, so 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 Fountain 38 SFC OB 2011 measures 38,0 feet overall (2011), giving it roughly 7,0 additional feet of deck space compared to the Fountain 31 CC 2010 at 31,0 feet (2010). Weight tells a clearer story for trailering families: the Fountain 38 SFC OB 2011 tips the scales at 14 500 lbs - 8 700 lbs less than the Fountain 31 CC 2010 at 5 800 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.
Both boats share a closely matched power ceiling - 2 hp for the Fountain 31 CC 2010 and 3 hp for the Fountain 38 SFC OB 2011. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Fountain 38 SFC OB 2011 carries 400 gallons versus 204 gallons in the Fountain 31 CC 2010. 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 Fountain 38 SFC OB 2011 is rated for 11 passengers, while the Fountain 31 CC 2010 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Fountain 38 SFC OB 2011 could be the deciding factor.
Bottom line: Choose the Fountain 38 SFC OB 2011 if your priority is putting more people on the water - it handles 11 passengers and at 38,0 ft it has the deck room to back that rating up comfortably. The Fountain 31 CC 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.