15.5 FLY ON (FON)
15.5.1 Competitors will attempt to achieve a mark close to a goal selected and declared by them before take-off or during flight.
15.5.2 Task data:
a. method of declaration,
b. number of goals permitted
c. goals available for declarations
d. minimum and maximum distance between previous mark and declared goal
e. minimum and maximum distance between declaration point and declared goal(s)
f. minimum and maximum distances of declared goal(s) from any goal set by the director
15.5.3 The result is the distance from the mark to the nearest valid declared goal. Smallest result is best.
The Fly On (FON) is very similar to a PDG. It features a point declared by a competitor using a 4/4 coordinate declaration and then flying to that point and placing a mark as close as possible. One difference is that this point may be declared during the flight if the director so chooses. As a result, it requires some more parameters around the timing and restrictions of the declaration time. To elaborate, the director may place parameters on the timing before or after tasks, location of the declaration, or distance/time between the declaration point and placement of the scored marker.
Unfortunately, because this is a virtual task there aren't a lot of great pictures. Enjoy the one I left instead as a treat.
Task data:
method of declaration
Tells the pilot how to officially declare their point. Typically, this is the Balloon Live App in modern ballooning.
number of goals permitted
The number of points that the pilot can select for that task. For example, if there is 2 goals permitted then the pilot can choose two points as valid locations, then must fly as close as possible to one of them.
goals available for declarations
Define what coordinates the pilot may select, this is where any parameters around valid coordinate sets would go.
minimum and maximum distance between previous mark and declared goal
This parameter defines when a declaration may be made relative to another logger mark. For example, if they place a logger mark (a scoring point) and the set distance is 1km, then they must declare a goal that is 1km away from that logger mark.
minimum and maximum distance between declaration point and declared goal(s)
This requirement says how much distance must be between the location of the declaration of the goal and the actual point that the pilot declares. It is often set as a distance. For example, the pilot must be 1km from the coordinate that they select as a goal when they declare that point.
minimum and maximum distances of declared goal(s) from any goal set by the director
Sometimes, the director wants a set distance between active targets and declared points. This manifests itself as rings around other targets. If the pilot declares a goal inside of those rings, they will receive a penalty.