The Go-Devil 18 x 56 - Standard 2005 vs Go-Devil 20 x 56 2013 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Go-Devil 18 x 56 - Standard 2005 measures 18,0 feet overall (2005), giving it roughly 16,0 additional feet of deck space compared to the Go-Devil 20 x 56 2013 at 2,0 feet (2013). At 58 lbs and 62 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 — 50 hp for the Go-Devil 18 x 56 - Standard 2005 and 50 hp for the Go-Devil 20 x 56 2013. 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.
For family outings this is probably the sharpest distinction between the two. The Go-Devil 20 x 56 2013 is rated for 6 passengers, while the Go-Devil 18 x 56 - Standard 2005 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Go-Devil 20 x 56 2013 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Go-Devil 20 x 56 2013 comes in at 1 lbs per hp versus 1 lbs per hp for the Go-Devil 18 x 56 - Standard 2005. 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.
Bottom line: Choose the Go-Devil 20 x 56 2013 if your priority is putting more people on the water — it handles 6 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The Go-Devil 18 x 56 - Standard 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.