The Leisure Pontoons 1723 Navigator 2006 vs Leisure Pontoons 2123 Island 2005 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 Leisure Pontoons 1723 Navigator 2006 measures 17,0 feet overall (2006), giving it roughly 15,0 additional feet of deck space compared to the Leisure Pontoons 2123 Island 2005 at 2,0 feet (2005). At 115 lbs and 17 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 — 2 hp for the Leisure Pontoons 1723 Navigator 2006 and 2 hp for the Leisure Pontoons 2123 Island 2005. 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 Leisure Pontoons 1723 Navigator 2006 is rated for 7 passengers, while the Leisure Pontoons 2123 Island 2005 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Leisure Pontoons 1723 Navigator 2006 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Leisure Pontoons 2123 Island 2005 comes in at 9 lbs per hp versus 58 lbs per hp for the Leisure Pontoons 1723 Navigator 2006. 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.
The Leisure Pontoons 1723 Navigator 2006 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Leisure Pontoons 2123 Island 2005 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: Choose the Leisure Pontoons 1723 Navigator 2006 if your priority is putting more people on the water — it handles 7 passengers and at 17,0 ft it has the deck room to back that rating up comfortably. The Leisure Pontoons 2123 Island 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.