When two boats share the same hull type — in this case both the SeaArk 2072MV 2011 and the SeaArk RXV 186 2013 are modified vee designs with aluminum 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?
On paper these two are close siblings in the size department — SeaArk 2072MV 2011 at 20,1 ft versus SeaArk RXV 186 2013 at 18,5 ft. At 81 lbs and 9 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 — 90 hp for the SeaArk 2072MV 2011 and 90 hp for the SeaArk RXV 186 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.
For family outings this is probably the sharpest distinction between the two. The SeaArk 2072MV 2011 is rated for 13 passengers, while the SeaArk RXV 186 2013 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SeaArk 2072MV 2011 could be the deciding factor.
Bottom line: Choose the SeaArk 2072MV 2011 if your priority is putting more people on the water — it handles 13 passengers and at 20,1 ft it has the deck room to back that rating up comfortably. The SeaArk RXV 186 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.