The Marathon Grumman Classic 1680CFP 2012 is a pontoon design and the Marathon Otisco 2013 is a flat-bottom design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

Size is the most obvious dividing line here. The Marathon Grumman Classic 1680CFP 2012 measures 16,0 feet overall (2012), giving it roughly 6,0 additional feet of deck space compared to the Marathon Otisco 2013 at 10,0 feet (2013). Weight tells a clearer story for trailering families: the Marathon Grumman Classic 1680CFP 2012 tips the scales at 1 460 lbs - 1 364 lbs more than the Marathon Otisco 2013 at 96 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 40 hp, the Marathon Grumman Classic 1680CFP 2012 has a 37-hp advantage over the Marathon Otisco 2013's 3-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 Marathon Grumman Classic 1680CFP 2012 is rated for 6 passengers, while the Marathon Otisco 2013 caps at 2. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Marathon Grumman Classic 1680CFP 2012 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Marathon Otisco 2013 comes in at 32 lbs per hp versus 37 lbs per hp for the Marathon Grumman Classic 1680CFP 2012. The lower the ratio the more explosive the acceleration - meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.