Both the Checkmate Convincor 300 2011 and the Checkmate ZT 230 BR 2010 are deep-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?
Size is the most obvious dividing line here. The Checkmate Convincor 300 2011 measures 29,7 feet overall (2011), giving it roughly 6,9 additional feet of deck space compared to the Checkmate ZT 230 BR 2010 at 22,8 feet (2010). Weight tells a clearer story for trailering families: the Checkmate Convincor 300 2011 tips the scales at 5 300 lbs - 2 400 lbs more than the Checkmate ZT 230 BR 2010 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 - 425 hp for the Checkmate Convincor 300 2011 and 425 hp for the Checkmate ZT 230 BR 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. Fuel capacity breaks the other way: the Checkmate Convincor 300 2011 carries 130 gallons versus 63 gallons in the Checkmate ZT 230 BR 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Bottom line: The Checkmate Convincor 300 2011 at 29,7 ft is the right call if deck space, comfort, and entertaining are top of your list. The Checkmate ZT 230 BR 2010 at 22,8 ft wins on trailering ease, likely lower purchase price, and simpler docking - a solid choice for a buyer who wants more boat for less money.