Maybe there isn't a workable answer to this unless you pay sufficiently above the award and exercise the bond option
Remember that for every operator paying the award there is an operator who isn't, and a young tiger keen to get that first Turbine job for not enough pay. If we pay "sufficiently above the award" it will probably be enough to ensure we don't win the work or need the pilots.
As for bonding? Good luck chasing that one inFair Work or in Court!