Both the Marquis Yachts 420 Sport Bridge 2011 and the Marquis Yachts 720 Tri-Deck 2011 are semi-displacement 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 Marquis Yachts 720 Tri-Deck 2011 measures 72,1 feet overall (2011), giving it roughly 28,5 additional feet of deck space compared to the Marquis Yachts 420 Sport Bridge 2011 at 43,6 feet (2011). Weight tells a clearer story for trailering families: the Marquis Yachts 720 Tri-Deck 2011 tips the scales at 120 200 lbs - 88 200 lbs less than the Marquis Yachts 420 Sport Bridge 2011 at 32 000 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 Marquis Yachts 420 Sport Bridge 2011 carries a rated maximum of 174 hp. Engine data for the Marquis Yachts 720 Tri-Deck 2011 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Marquis Yachts 720 Tri-Deck 2011 carries 1 300 gallons versus 300 gallons in the Marquis Yachts 420 Sport Bridge 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.