Matching a modified vee Stanley Boats Camp Tiller 20 ft. 2010 against a deep vee Stanley Boats Islander I/O 21 2012 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department — Stanley Boats Camp Tiller 20 ft. 2010 at 19,2 ft versus Stanley Boats Islander I/O 21 2012 at 21,7 ft. Weight tells a clearer story for trailering families: the Stanley Boats Islander I/O 21 2012 tips the scales at 2 765 lbs — 2 040 lbs less than the Stanley Boats Camp Tiller 20 ft. 2010 at 725 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 Stanley Boats Islander I/O 21 2012 has a 140-hp advantage over the Stanley Boats Camp Tiller 20 ft. 2010's 60-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Stanley Boats Islander I/O 21 2012 is rated for 8 passengers, while the Stanley Boats Camp Tiller 20 ft. 2010 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Stanley Boats Islander I/O 21 2012 could be the deciding factor.
Bottom line: Choose the Stanley Boats Islander I/O 21 2012 if your priority is putting more people on the water — it handles 8 passengers and at 21,7 ft it has the deck room to back that rating up comfortably. The Stanley Boats Camp Tiller 20 ft. 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.