When two boats share the same hull type — in this case both the Harris Flotebote Grand Mariner 230 SEL 2011 and the Harris Flotebote Grand Mariner SEL 250 2013 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?

Size is the most obvious dividing line here. The Harris Flotebote Grand Mariner SEL 250 2013 measures 27,3 feet overall (2013), giving it roughly 4,3 additional feet of deck space compared to the Harris Flotebote Grand Mariner 230 SEL 2011 at 23,0 feet (2011). Weight tells a clearer story for trailering families: the Harris Flotebote Grand Mariner SEL 250 2013 tips the scales at 4 151 lbs — 674 lbs less than the Harris Flotebote Grand Mariner 230 SEL 2011 at 3 477 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 430 hp, the Harris Flotebote Grand Mariner SEL 250 2013 has a 130-hp advantage over the Harris Flotebote Grand Mariner 230 SEL 2011's 300-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 81 gal and 81 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Harris Flotebote Grand Mariner SEL 250 2013 is rated for 16 passengers, while the Harris Flotebote Grand Mariner 230 SEL 2011 caps at 14. 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 2013 could be the deciding factor.