There are five Snark Sailboat models. The Super Snark, The Sunflower, The Sea Skimmer, The Sunchaser I, and the Sunchaser II. The Super Snark, Sunflower, and Sea Skimmer are for 1 or 2 people. The Sunchasers are for up to 4 people.
The Super Snark and Sunflower are same length (11 feet) and weight (50 lbs) and equally easy to sail. The Sunflower is a little deeper and wider and has a lot more sail area (22%) so it is faster and more spacious. The Sunflower has a splash deck up front to help keep splashing water out, so it's a little dryer. The photo below shows the Sunflower (left) and the Super Snark (right). (NOTE: The Sunflower has an older sail, the current sail does not have a flower bloom on it, just the word "Sunflower" as shown.)
The Sea Skimmer has 2 sails and no sides -- think of it as a paddleboard sailboat -- and is a little longer (12') and little heavier (55 lbs). The Sea Skimmer is faster, more challenging to sail, can carry more weight and is less comfortable.
The Sunchaser I and II are big step up in passenger capacity (4 people), comfort (bench seats!) and speed -- and also in weight (125 lbs). But even the Sunchasers can be car topped. Both Sunchaser Sailboats are made with the same hull, the Sunchaser I is rigged with a single Lateen sail and the Sunchaser II is rigged as a sloop (2 sails one in front of the mast, the other behind)
The Sunchaser I The Sunchaser II
The Sunchaser I and II hull