When two boats share the same hull type — in this case both the Rinker 310 EC 2010 and the Rinker 380 Express Cruiser 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 Rinker 380 Express Cruiser 2009 measures 39,0 feet overall (2009), giving it roughly 5,8 additional feet of deck space compared to the Rinker 310 EC 2010 at 33,3 feet (2010). At 121 lbs and 184 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.

For family outings this is probably the sharpest distinction between the two. The Rinker 380 Express Cruiser 2009 is rated for 11 passengers, while the Rinker 310 EC 2010 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Rinker 380 Express Cruiser 2009 could be the deciding factor.