The Lund 1650 Rebel XL SS 2013 is a deep-V design and the Lund 1800 Alaskan SS 2008 is a modified-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department - Lund 1650 Rebel XL SS 2013 at 16,5 ft versus Lund 1800 Alaskan SS 2008 at 18,0 ft. Weight tells a clearer story for trailering families: the Lund 1800 Alaskan SS 2008 tips the scales at 1 030 lbs - 180 lbs less than the Lund 1650 Rebel XL SS 2013 at 850 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 - 90 hp for the Lund 1650 Rebel XL SS 2013 and 90 hp for the Lund 1800 Alaskan SS 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. Both carry nearly identical fuel loads - 19 gal and 19 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Lund 1650 Rebel XL SS 2013 is rated for 6 passengers, while the Lund 1800 Alaskan SS 2008 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Lund 1650 Rebel XL SS 2013 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Lund 1650 Rebel XL SS 2013 comes in at 9 lbs per hp versus 11 lbs per hp for the Lund 1800 Alaskan SS 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.
Bottom line: Choose the Lund 1650 Rebel XL SS 2013 if your priority is putting more people on the water - it handles 6 passengers and at 16,5 ft it has the deck room to back that rating up comfortably. The Lund 1800 Alaskan SS 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.