Matching a deep vee Stanley Boats Islander Runabout 21 2011 against a modified vee Stanley Boats Tiller 14 ft. 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.
Size is the most obvious dividing line here. The Stanley Boats Islander Runabout 21 2011 measures 21,0 feet overall (2011), giving it roughly 7,0 additional feet of deck space compared to the Stanley Boats Tiller 14 ft. 2012 at 14,0 feet (2012). At 2 lbs and 45 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 Stanley Boats Islander Runabout 21 2011 has a 170-hp advantage over the Stanley Boats Tiller 14 ft. 2012's 30-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 Runabout 21 2011 is rated for 8 passengers, while the Stanley Boats Tiller 14 ft. 2012 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Stanley Boats Islander Runabout 21 2011 could be the deciding factor.
Bottom line: Choose the Stanley Boats Islander Runabout 21 2011 if your priority is putting more people on the water — it handles 8 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Stanley Boats Tiller 14 ft. 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.