When two boats share the same hull type — in this case both the Key West 186 BR 2010 and the Key West 2020 WA 2007 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 186 BR 2010 measures 18,5 feet overall (2010), giving it roughly 16,5 additional feet of deck space compared to the Key West 2020 WA 2007 at 2,0 feet (2007). Weight tells a clearer story for trailering families: the Key West 186 BR 2010 tips the scales at 165 lbs — 163 lbs more than the Key West 2020 WA 2007 at 2 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 200 hp, the Key West 2020 WA 2007 has a 50-hp advantage over the Key West 186 BR 2010's 150-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 4 gal and 6 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Key West 2020 WA 2007 is rated for 6 passengers, while the Key West 186 BR 2010 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Key West 2020 WA 2007 could be the deciding factor.
Bottom line: Choose the Key West 2020 WA 2007 if your priority is putting more people on the water — it handles 6 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The Key West 186 BR 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.