The Harris Flotebote Grand Mariner 220 2009 vs Harris Flotebote Sunliner 240 I/O 2006 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 — Harris Flotebote Grand Mariner 220 2009 at 23,0 ft versus Harris Flotebote Sunliner 240 I/O 2006 at 24,0 ft. Weight tells a clearer story for trailering families: the Harris Flotebote Grand Mariner 220 2009 tips the scales at 2 285 lbs — 2 282 lbs more than the Harris Flotebote Sunliner 240 I/O 2006 at 3 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 — 135 hp for the Harris Flotebote Grand Mariner 220 2009 and 135 hp for the Harris Flotebote Sunliner 240 I/O 2006. 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.
For family outings this is probably the sharpest distinction between the two. The Harris Flotebote Grand Mariner 220 2009 is rated for 14 passengers, while the Harris Flotebote Sunliner 240 I/O 2006 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Harris Flotebote Grand Mariner 220 2009 could be the deciding factor.
Bottom line: Choose the Harris Flotebote Grand Mariner 220 2009 if your priority is putting more people on the water — it handles 14 passengers and at 23,0 ft it has the deck room to back that rating up comfortably. The Harris Flotebote Sunliner 240 I/O 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.