The Crestliner C 2070 V 2006 is a modified-V design and the Crestliner Fish Hawk 1650 DC 2012 is a deep-V design, so you're likely deciding between two noticeably 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 Crestliner C 2070 V 2006 measures 20,0 feet overall (2006), giving it roughly 3,3 additional feet of deck space compared to the Crestliner Fish Hawk 1650 DC 2012 at 16,7 feet (2012). Weight tells a clearer story for trailering families: the Crestliner Fish Hawk 1650 DC 2012 tips the scales at 1 060 lbs - 260 lbs less than the Crestliner C 2070 V 2006 at 800 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The power gap is worth calling out. Rated to 90 hp, the Crestliner Fish Hawk 1650 DC 2012 has a 30-hp advantage over the Crestliner C 2070 V 2006's 60-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 Crestliner C 2070 V 2006 is rated for 8 passengers, while the Crestliner Fish Hawk 1650 DC 2012 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crestliner C 2070 V 2006 could be the deciding factor.
Bottom line: Choose the Crestliner C 2070 V 2006 if your priority is putting more people on the water - it handles 8 passengers and at 20,0 ft it has the deck room to back that rating up comfortably. The Crestliner Fish Hawk 1650 DC 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.