When two boats share the same hull type — in this case both the Four Winns V318 2008 and the Four Winns V408 2009 are modified vee designs with fiberglass construction — 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 Four Winns V408 2009 measures 43,0 feet overall (2009), giving it roughly 10,0 additional feet of deck space compared to the Four Winns V318 2008 at 33,0 feet (2008). At 12 lbs and 28 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 Four Winns V318 2008 carries a rated maximum of 300 hp. Engine data for the Four Winns V408 2009 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.

For family outings this is probably the sharpest distinction between the two. The Four Winns V408 2009 is rated for 13 passengers, while the Four Winns V318 2008 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Four Winns V408 2009 could be the deciding factor.