The Pro-Line 21 Walk 2007 vs Pro-Line 23 cc 2011 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 - Pro-Line 21 Walk 2007 at 21,0 ft versus Pro-Line 23 cc 2011 at 23,0 ft. Weight tells a clearer story for trailering families: the Pro-Line 23 cc 2011 tips the scales at 3 200 lbs - 700 lbs less than the Pro-Line 21 Walk 2007 at 2 500 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.
Both boats share a closely matched power ceiling - 200 hp for the Pro-Line 21 Walk 2007 and 200 hp for the Pro-Line 23 cc 2011. 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 carry nearly identical fuel loads - 70 gal and 70 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Pro-Line 23 cc 2011 is rated for 7 passengers, while the Pro-Line 21 Walk 2007 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Pro-Line 23 cc 2011 could be the deciding factor.
Bottom line: Choose the Pro-Line 23 cc 2011 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 Pro-Line 21 Walk 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.