When two boats share the same hull type — in this case both the Mercury DR520 2008 and the Mercury PT520 2008 are inflatable rigid designs with inflatable 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 — Mercury DR520 2008 at 17,0 ft versus Mercury PT520 2008 at 17,0 ft. At 577 lbs and 661 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.

Both boats share a closely matched power ceiling — 100 hp for the Mercury DR520 2008 and 100 hp for the Mercury PT520 2008. 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 Mercury PT520 2008 carries 19 gallons versus 2 gallons in the Mercury DR520 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 9 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.

At this size, power-to-weight ratio matters more than outright horsepower. The Mercury DR520 2008 comes in at 6 lbs per hp versus 7 lbs per hp for the Mercury PT520 2008. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.