A minimum of two rounds must be flown. All three tasks must be flown with the same model. Only the addition of ballast is allowed or an aerodynamic change of the model when applied by remote control, for instance in the form of camber changing flaps. Most current models have a combination of the aileron, camber changing and brake functions spread out over four wing control surfaces. This is possible with modern computer radio controls.
Most pilots use separate flap and trim settings for the different tasks.
Every task begins with a launch with an electrical powered winch. At a maximum of 200 meters from the launch point, a turnaround pulley is fixed. The nylon monofilament starting line is thus 400 meters long, running from the winch towards the pulley and back. The task must be completed within nine minutes from the order of the starter which includes the towing time. No points will be awarded for flight times in excess of working time.