Matching a flat Ultracraft 1236 2009 against a modified vee Ultracraft 166T 2012 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
Size is the most obvious dividing line here. The Ultracraft 166T 2012 measures 16,5 feet overall (2012), giving it roughly 4,5 additional feet of deck space compared to the Ultracraft 1236 2009 at 12,0 feet (2009). At 14 lbs and 69 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
Both boats share a closely matched power ceiling — 10 hp for the Ultracraft 1236 2009 and 6 hp for the Ultracraft 166T 2012. 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.
For family outings this is probably the sharpest distinction between the two. The Ultracraft 166T 2012 is rated for 5 passengers, while the Ultracraft 1236 2009 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Ultracraft 166T 2012 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Ultracraft 1236 2009 comes in at 1 lbs per hp versus 12 lbs per hp for the Ultracraft 166T 2012. 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.
Bottom line: Choose the Ultracraft 166T 2012 if your priority is putting more people on the water — it handles 5 passengers and at 16,5 ft it has the deck room to back that rating up comfortably. The Ultracraft 1236 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.