I agree absolutely - totally unprofessional - but we have face the fact that young men(mostly) when left to their own devices in remote locations will engage in this sort of activity IF they perceive that it will not affect future employment prospects. QF (by no means the only one- but they should set the example) has it ranks embedded with individuals who have a history of doing exactly what the pilot of VH-BBI was doing and worse. QF either don't know or more to the point, don't want to know. Pilots notice this and in absence of any meaningful enforcement of the regulations (CASA) there seems to be little disincentive to becoming an amature test pilot.