Matching a flat Lund 1648 2009 against a deep vee Lund 1800 Tyee 2013 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
Size is the most obvious dividing line here. The Lund 1800 Tyee 2013 measures 18,1 feet overall (2013), giving it roughly 3,1 additional feet of deck space compared to the Lund 1648 2009 at 15,0 feet (2009). At 42 lbs and 14 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.
The power gap is worth calling out. Rated to 175 hp, the Lund 1800 Tyee 2013 has a 140-hp advantage over the Lund 1648 2009's 35-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Lund 1800 Tyee 2013 is rated for 7 passengers, while the Lund 1648 2009 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Lund 1800 Tyee 2013 could be the deciding factor.
Bottom line: Choose the Lund 1800 Tyee 2013 if your priority is putting more people on the water — it handles 7 passengers and at 18,1 ft it has the deck room to back that rating up comfortably. The Lund 1648 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.