When two boats share the same hull type — in this case both the Misty Harbor 1680EC 2009 and the Misty Harbor 2085FS 2011 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 Misty Harbor 1680EC 2009 measures 16,0 feet overall (2009), giving it roughly 14,0 additional feet of deck space compared to the Misty Harbor 2085FS 2011 at 2,0 feet (2011). Weight tells a clearer story for trailering families: the Misty Harbor 2085FS 2011 tips the scales at 201 lbs — 122 lbs less than the Misty Harbor 1680EC 2009 at 79 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 90 hp, the Misty Harbor 2085FS 2011 has a 86-hp advantage over the Misty Harbor 1680EC 2009's 4-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 Misty Harbor 2085FS 2011 is rated for 11 passengers, while the Misty Harbor 1680EC 2009 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Misty Harbor 2085FS 2011 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Misty Harbor 2085FS 2011 comes in at 2 lbs per hp versus 20 lbs per hp for the Misty Harbor 1680EC 2009. 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.