Class mobility

The 57th Australian Multiclass Nationals are underway in Narromine.

They are running 4 classes: Open, 18m, 15m, and Std.

All four classes are handicapped. The entry rules seem to be:

a) You can enter Open Class if your wingspan is at least 18 meters.
b) You can enter 18m Class only if you use an 18m Class glider.
c) You can enter Open and 18m simultaneously if you meet both conditions (a) and (b), above.
d) You can enter 15m Class if your wingspan is = 15 meters.
e) You can enter Std Class if you use a Standard Class glider.
f) You can enter 15m and Std simultaneously if you meet both conditions
(d) and (e), above.

They have a total of 79 entries: 24 Open, 22 18m, 19 15m, and 12 Std.

The total number of pilots (and gliders) is 44.

Tasking is constrained to settiing two tasks each day: one for the
Open/18m classes and one for the 15m/Std classes. Presumably, the two
tasks must be different; otherwise pilots would be tempted to enter more
than two classes simutaneously!

So, the pilots flying flapped 15 meter span gliders and the pilots
flying gliders with long wings are disadvantaged - they are entered in
only one class.

Everyone else can set their sights on two different podia. As of today
(Task 9), the leaders in the Open and 18m classes are the same people,
in the same order, in places 1-8.

I wonder how they handle the national ranking list and team selection!