Matching a modified vee SeaArk CRX 186 2011 against a tunnel SeaArk Tunnel Jon 1872MVT 2008 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.
On paper these two are close siblings in the size department — SeaArk CRX 186 2011 at 18,5 ft versus SeaArk Tunnel Jon 1872MVT 2008 at 18,0 ft. At 11 lbs and 75 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 power gap is worth calling out. Rated to 140 hp, the SeaArk CRX 186 2011 has a 60-hp advantage over the SeaArk Tunnel Jon 1872MVT 2008's 80-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The SeaArk Tunnel Jon 1872MVT 2008 is rated for 12 passengers, while the SeaArk CRX 186 2011 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SeaArk Tunnel Jon 1872MVT 2008 could be the deciding factor.
Bottom line: Choose the SeaArk Tunnel Jon 1872MVT 2008 if your priority is putting more people on the water — it handles 12 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The SeaArk CRX 186 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.