When two boats share the same hull type — in this case both the Polar Kraft V 186 SC 2010 and the Polar Kraft V 188 FS 2010 are modified 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?
On paper these two are close siblings in the size department — Polar Kraft V 186 SC 2010 at 18,5 ft versus Polar Kraft V 188 FS 2010 at 18,7 ft. Weight tells a clearer story for trailering families: the Polar Kraft V 188 FS 2010 tips the scales at 1 692 lbs — 508 lbs less than the Polar Kraft V 186 SC 2010 at 1 184 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 Polar Kraft V 188 FS 2010 has a 85-hp advantage over the Polar Kraft V 186 SC 2010'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 Polar Kraft V 188 FS 2010 carries 42 gallons versus 27 gallons in the Polar Kraft V 186 SC 2010. 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 Polar Kraft V 188 FS 2010 is rated for 8 passengers, while the Polar Kraft V 186 SC 2010 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Polar Kraft V 188 FS 2010 could be the deciding factor.
Bottom line: Choose the Polar Kraft V 188 FS 2010 if your priority is putting more people on the water — it handles 8 passengers and at 18,7 ft it has the deck room to back that rating up comfortably. The Polar Kraft V 186 SC 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.