When two boats share the same hull type — in this case both the Key West 177 SK 2011 and the Key West 2020 WA 2009 are modified 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?
Size is the most obvious dividing line here. The Key West 177 SK 2011 measures 17,3 feet overall (2011), giving it roughly 15,3 additional feet of deck space compared to the Key West 2020 WA 2009 at 2,0 feet (2009). At 11 lbs and 2 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 200 hp, the Key West 2020 WA 2009 has a 110-hp advantage over the Key West 177 SK 2011's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Key West 177 SK 2011 carries 19 gallons versus 6 gallons in the Key West 2020 WA 2009. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
At this size, power-to-weight ratio matters more than outright horsepower. The Key West 2020 WA 2009 comes in at 0 lbs per hp versus 0 lbs per hp for the Key West 177 SK 2011. 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.
Bottom line: The Key West 177 SK 2011 at 17,3 ft is the right call if deck space, comfort, and entertaining are top of your list. The Key West 2020 WA 2009 at 2,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.