Several 2000mt sealed runways within 100nm and 20 within 200nm. Paraburdoo is far from isolated, all the nearby mine strips and then Newman at 115nm, Karatha, Hedland and Onslow all just over 150nm. With 4 attempts it seems more a fixation on getting in rather than looking for somewhere else to go, that's if what was said earlier about all the surrounding areas being CAVOK is true. After 2 or so attempts people tend to notice a jet floating around doing circles, so it gets attention, even the passengers will put in reports if they thought something was amiss.