When two boats share the same hull type — in this case both the Stanley Boats Islander Runabout 21 ft. Center Console 2010 and the Stanley Boats Islander Runabout 23 ft. Dual Console 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?

On paper these two are close siblings in the size department — Stanley Boats Islander Runabout 21 ft. Center Console 2010 at 21,0 ft versus Stanley Boats Islander Runabout 23 ft. Dual Console 2010 at 23,0 ft. Weight tells a clearer story for trailering families: the Stanley Boats Islander Runabout 23 ft. Dual Console 2010 tips the scales at 2 152 lbs — 179 lbs less than the Stanley Boats Islander Runabout 21 ft. Center Console 2010 at 1 973 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.

Both boats share a closely matched power ceiling — 200 hp for the Stanley Boats Islander Runabout 21 ft. Center Console 2010 and 200 hp for the Stanley Boats Islander Runabout 23 ft. Dual Console 2010. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.

Both boats are rated for 8 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.