When two boats share the same hull type — in this case both the EdgeWater 170CC 2009 and the EdgeWater 188CC 2008 are deep vee designs with fiberglass 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 — EdgeWater 170CC 2009 at 16,0 ft versus EdgeWater 188CC 2008 at 18,0 ft. Weight tells a clearer story for trailering families: the EdgeWater 188CC 2008 tips the scales at 205 lbs — 188 lbs less than the EdgeWater 170CC 2009 at 17 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 150 hp, the EdgeWater 188CC 2008 has a 35-hp advantage over the EdgeWater 170CC 2009's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the EdgeWater 188CC 2008 carries 54 gallons versus 32 gallons in the EdgeWater 170CC 2009. 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 EdgeWater 188CC 2008 is rated for 7 passengers, while the EdgeWater 170CC 2009 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the EdgeWater 188CC 2008 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The EdgeWater 170CC 2009 comes in at 0 lbs per hp versus 1 lbs per hp for the EdgeWater 188CC 2008. 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.