When two boats share the same hull type — in this case both the Harris Flotebote Grand Mariner 220 2010 and the Harris Flotebote Sunliner 220 2009 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 220 2010 at 22,0 ft versus Harris Flotebote Sunliner 220 2009 at 22,0 ft. Weight tells a clearer story for trailering families: the Harris Flotebote Grand Mariner 220 2010 tips the scales at 2 805 lbs — 2 783 lbs more than the Harris Flotebote Sunliner 220 2009 at 22 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 Harris Flotebote Sunliner 220 2009 tops out at 135 hp. Engine specs for the Harris Flotebote Grand Mariner 220 2010 aren't listed — confirm with a dealer before selecting an outboard.

For family outings this is probably the sharpest distinction between the two. The Harris Flotebote Sunliner 220 2009 is rated for 15 passengers, while the Harris Flotebote Grand Mariner 220 2010 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 Sunliner 220 2009 could be the deciding factor.