Both the Larson 288 LXi 2010 and the Larson SEi 180 Fish Series I/O 2006 are modified-V designs, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
Size is the most obvious dividing line here. The Larson 288 LXi 2010 measures 29,2 feet overall (2010), giving it roughly 12,2 additional feet of deck space compared to the Larson SEi 180 Fish Series I/O 2006 at 17,0 feet (2006). Weight tells a clearer story for trailering families: the Larson 288 LXi 2010 tips the scales at 5 970 lbs - 3 320 lbs more than the Larson SEi 180 Fish Series I/O 2006 at 2 650 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 Larson 288 LXi 2010 carries a rated maximum of 425 hp. Engine data for the Larson SEi 180 Fish Series I/O 2006 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Larson 288 LXi 2010 carries 100 gallons versus 23 gallons in the Larson SEi 180 Fish Series I/O 2006. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Larson 288 LXi 2010 is rated for 8 passengers, while the Larson SEi 180 Fish Series I/O 2006 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Larson 288 LXi 2010 could be the deciding factor.
Bottom line: Choose the Larson 288 LXi 2010 if your priority is putting more people on the water - it handles 8 passengers and at 29,2 ft it has the deck room to back that rating up comfortably. The Larson SEi 180 Fish Series I/O 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.