You can't share info on the radio as decribed. That said enforcing a
....

How can the organisers decide whether info relayed from a pilot to their
personal base/retrieve team is not also intended to be of benefit to to
other (team members) pilots?
What is to stop 3 pilots scouting out 1/2 hour before and, because pilot 4
understands the code used by pilots 1-3, p4 knowns which route (1-3) is
favourable?

p.s. I know nothing.

J.