The Parker Boats 2100 Big Bay 2009 vs Parker Boats 2310 Walkaround 2007 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.
On paper these two are close siblings in the size department — Parker Boats 2100 Big Bay 2009 at 21,0 ft versus Parker Boats 2310 Walkaround 2007 at 23,0 ft. Weight tells a clearer story for trailering families: the Parker Boats 2310 Walkaround 2007 tips the scales at 4 288 lbs — 4 023 lbs less than the Parker Boats 2100 Big Bay 2009 at 265 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The power gap is worth calling out. Rated to 250 hp, the Parker Boats 2310 Walkaround 2007 has a 50-hp advantage over the Parker Boats 2100 Big Bay 2009's 200-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Parker Boats 2310 Walkaround 2007 carries 15 gallons versus 5 gallons in the Parker Boats 2100 Big Bay 2009. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Parker Boats 2310 Walkaround 2007 is rated for 7 passengers, while the Parker Boats 2100 Big Bay 2009 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Parker Boats 2310 Walkaround 2007 could be the deciding factor.
Bottom line: Choose the Parker Boats 2310 Walkaround 2007 if your priority is putting more people on the water — it handles 7 passengers and at 23,0 ft it has the deck room to back that rating up comfortably. The Parker Boats 2100 Big Bay 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.