How would you get sizeable groups of illegal farm helps into NZ? How would they live/send money back home/travel back home etc? NZ is a remote island, this is n

How would you get sizeable groups of illegal farm helps into NZ? How would they live/send money back home/travel back home etc? NZ is a remote island, this is not a Mexico/Arizona situation. NZ native farmers are very in control of their farms and NZ's agriculture industry in general.