When two boats share the same hull type — in this case both the Harris Flotebote Grand Mariner SEL 250 2010 and the Harris Flotebote Sunliner FS 240 2012 are pontoon designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — Harris Flotebote Grand Mariner SEL 250 2010 at 25,0 ft versus Harris Flotebote Sunliner FS 240 2012 at 26,3 ft. Weight tells a clearer story for trailering families: the Harris Flotebote Sunliner FS 240 2012 tips the scales at 3 157 lbs — 2 702 lbs less than the Harris Flotebote Grand Mariner SEL 250 2010 at 455 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 425 hp, the Harris Flotebote Grand Mariner SEL 250 2010 has a 423-hp advantage over the Harris Flotebote Sunliner FS 240 2012's 2-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Harris Flotebote Grand Mariner SEL 250 2010 carries 81 gallons versus 5 gallons in the Harris Flotebote Sunliner FS 240 2012. 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 Harris Flotebote Grand Mariner SEL 250 2010 is rated for 15 passengers, while the Harris Flotebote Sunliner FS 240 2012 caps at 2. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Harris Flotebote Grand Mariner SEL 250 2010 could be the deciding factor.