The Harris Flotebote Grand Mariner SL 250 (2-Tube) 2010 vs Harris Flotebote Sunliner 180 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.
Size is the most obvious dividing line here. The Harris Flotebote Grand Mariner SL 250 (2-Tube) 2010 measures 25,0 feet overall (2010), giving it roughly 6,0 additional feet of deck space compared to the Harris Flotebote Sunliner 180 2007 at 19,0 feet (2007). Weight tells a clearer story for trailering families: the Harris Flotebote Grand Mariner SL 250 (2-Tube) 2010 tips the scales at 2 963 lbs — 1 188 lbs more than the Harris Flotebote Sunliner 180 2007 at 1 775 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 175 hp, the Harris Flotebote Grand Mariner SL 250 (2-Tube) 2010 has a 95-hp advantage over the Harris Flotebote Sunliner 180 2007's 80-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Harris Flotebote Grand Mariner SL 250 (2-Tube) 2010 is rated for 13 passengers, while the Harris Flotebote Sunliner 180 2007 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Harris Flotebote Grand Mariner SL 250 (2-Tube) 2010 could be the deciding factor.
Bottom line: Choose the Harris Flotebote Grand Mariner SL 250 (2-Tube) 2010 if your priority is putting more people on the water — it handles 13 passengers and at 25,0 ft it has the deck room to back that rating up comfortably. The Harris Flotebote Sunliner 180 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.