Both the Steiger Craft Block Island 21 2010 and the Steiger Craft Super Fly 21 2009 are modified-V designs, both built in fibreglass, so 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 - Steiger Craft Block Island 21 2010 at 20,0 ft versus Steiger Craft Super Fly 21 2009 at 20,0 ft. Weight tells a clearer story for trailering families: the Steiger Craft Block Island 21 2010 tips the scales at 3 200 lbs - 300 lbs more than the Steiger Craft Super Fly 21 2009 at 2 900 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 Steiger Craft Block Island 21 2010 and 200 hp for the Steiger Craft Super Fly 21 2009. 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 carry nearly identical fuel loads - 60 gal and 60 gal - so range won't be a tiebreaker here.

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.