Matching a deep vee Yellowfin 34 2011 against a inflatable rigid Yellowfin 40 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 Yellowfin 34 2011 measures 34,7 feet overall (2011), giving it roughly 30,7 additional feet of deck space compared to the Yellowfin 40 2013 at 4,0 feet (2013). At 88 lbs and 105 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.
Both boats share a closely matched power ceiling — 1 050 hp for the Yellowfin 34 2011 and 1 050 hp for the Yellowfin 40 2013. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Yellowfin 34 2011 carries 45 gallons versus 4 gallons in the Yellowfin 40 2013. 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 Yellowfin 40 2013 is rated for 12 passengers, while the Yellowfin 34 2011 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Yellowfin 40 2013 could be the deciding factor.
Bottom line: Choose the Yellowfin 40 2013 if your priority is putting more people on the water — it handles 12 passengers and at 4,0 ft it has the deck room to back that rating up comfortably. The Yellowfin 34 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 10 that costs less to run day-to-day.