I think what our friend is getting at is the fact that a requirement of his study visa is that he is only allowed to accept work on a part time basis (20 hours a week max). That 20 hours is both work in the air (flying) and on the ground that he would be paid for. Assuming he is being paid
Aussie_Pilot: "the priority is the hour bulding so in last chante, i could work for free..."
I think your best bet aussie_pilot is to pay someone to let you fly for them, and thus keep you off the books.