Formula sailors need long lines when running deep down wind. If you are too close to the rig, you will get tossed over the nose. Upwind, the lines are shortened for more efficient upwind sailing.
Since most if not all formula sailors use seat harnesses, long lines are necessary because of the low hook. Booms need to be high for the downwind runs since the rig gets raked back quite a bit and if the booms are low, you get stuck in a squatting position in the straps and can't stand up straight.
Bottom line - long adjustable lines.
Formula 160; iSonic 111; HiFly Move 105; Tiga 263; '85 Mistral Superlight.
Maui Sails TR 11.0; 9.2; 8.4; 7.6; 6.6; Maui Sails Switch 6.0; 5.2; Maui Sails Global 4.5; 4.0.