When two boats share the same hull type — in this case both the Weldcraft Marine 186 SD 2009 and the Weldcraft Marine 220 2010 are deep vee 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 Weldcraft Marine 220 2010 measures 22,0 feet overall (2010), giving it roughly 3,5 additional feet of deck space compared to the Weldcraft Marine 186 SD 2009 at 18,5 feet (2009). Weight tells a clearer story for trailering families: the Weldcraft Marine 220 2010 tips the scales at 3 125 lbs — 550 lbs less than the Weldcraft Marine 186 SD 2009 at 2 575 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 300 hp, the Weldcraft Marine 220 2010 has a 100-hp advantage over the Weldcraft Marine 186 SD 2009's 200-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Weldcraft Marine 186 SD 2009 carries 42 gallons versus 9 gallons in the Weldcraft Marine 220 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 6 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.