The Alumacraft Waterfowler 15 2004 vs Alumacraft Waterfowler 16 2005 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
The Alumacraft Waterfowler 16 2005 tops out at 40 hp. Engine specs for the Alumacraft Waterfowler 15 2004 aren't listed — confirm with a dealer before selecting an outboard.
For family outings this is probably the sharpest distinction between the two. The Alumacraft Waterfowler 16 2005 is rated for 5 passengers, while the Alumacraft Waterfowler 15 2004 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumacraft Waterfowler 16 2005 could be the deciding factor.
Bottom line: Choose the Alumacraft Waterfowler 16 2005 if your priority is putting more people on the water — it handles 5 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The Alumacraft Waterfowler 15 2004 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.