Matching a modified vee Weld-Craft Duck 2012 against a flat Weld-Craft RS 48 (15 ft.) 2007 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.
Both boats share a closely matched power ceiling — 25 hp for the Weld-Craft Duck 2012 and 30 hp for the Weld-Craft RS 48 (15 ft.) 2007. 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.
Both boats are rated for 4 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: The Weld-Craft Duck 2012 and Weld-Craft RS 48 (15 ft.) 2007 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.