Matching a modified vee Weld-Craft Duck 2012 against a deep vee Weldcraft Marine 21 Legacy 2008 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 Weldcraft Marine 21 Legacy 2008 measures 21,0 feet overall (2008), giving it roughly 6,0 additional feet of deck space compared to the Weld-Craft Duck 2012 at 15,0 feet (2012). At 26 lbs and 31 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.
The Weld-Craft Duck 2012 carries a rated maximum of 25 hp. Engine data for the Weldcraft Marine 21 Legacy 2008 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.
For family outings this is probably the sharpest distinction between the two. The Weldcraft Marine 21 Legacy 2008 is rated for 6 passengers, while the Weld-Craft Duck 2012 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Weldcraft Marine 21 Legacy 2008 could be the deciding factor.
Bottom line: Choose the Weldcraft Marine 21 Legacy 2008 if your priority is putting more people on the water — it handles 6 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Weld-Craft Duck 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.