Matching a modified vee Duffy 18 Snug Harbor 2013 against a catamaran Duffy Tri Cat 16 2013 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 Duffy 18 Snug Harbor 2013 measures 18,4 feet overall (2013), giving it roughly 3,0 additional feet of deck space compared to the Duffy Tri Cat 16 2013 at 15,4 feet (2013). At 27 lbs and 23 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.
For family outings this is probably the sharpest distinction between the two. The Duffy 18 Snug Harbor 2013 is rated for 11 passengers, while the Duffy Tri Cat 16 2013 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Duffy 18 Snug Harbor 2013 could be the deciding factor.
Bottom line: Choose the Duffy 18 Snug Harbor 2013 if your priority is putting more people on the water — it handles 11 passengers and at 18,4 ft it has the deck room to back that rating up comfortably. The Duffy Tri Cat 16 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.