The Lund 1436L 2009 is a flat-bottom design and the Lund 1950 Tyee 2005 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.
Size is the most obvious dividing line here. The Lund 1950 Tyee 2005 measures 19,0 feet overall (2005), giving it roughly 5,0 additional feet of deck space compared to the Lund 1436L 2009 at 14,0 feet (2009). Weight tells a clearer story for trailering families: the Lund 1950 Tyee 2005 tips the scales at 1 900 lbs - 1 755 lbs less than the Lund 1436L 2009 at 145 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.
The power gap is worth calling out. Rated to 225 hp, the Lund 1950 Tyee 2005 has a 210-hp advantage over the Lund 1436L 2009's 15-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 1950 Tyee 2005 is rated for 9 passengers, while the Lund 1436L 2009 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Lund 1950 Tyee 2005 could be the deciding factor.
Bottom line: Choose the Lund 1950 Tyee 2005 if your priority is putting more people on the water - it handles 9 passengers and at 19,0 ft it has the deck room to back that rating up comfortably. The Lund 1436L 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.