Matching a flat Haynie 20 ft. Flats 2008 against a modified vee Haynie 21 Tunnel 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.
Size is the most obvious dividing line here. The Haynie 21 Tunnel 2008 measures 21,0 feet overall (2008), giving it roughly 19,0 additional feet of deck space compared to the Haynie 20 ft. Flats 2008 at 2,0 feet (2008). At 105 lbs and 135 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 250 hp, the Haynie 21 Tunnel 2008 has a 100-hp advantage over the Haynie 20 ft. Flats 2008's 150-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Haynie 21 Tunnel 2008 carries 53 gallons versus 4 gallons in the Haynie 20 ft. Flats 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 6 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: The Haynie 21 Tunnel 2008 at 21,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Haynie 20 ft. Flats 2008 at 2,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.