Hey Reeko, just sieves mate, can't use any powered stuff on Billabong Blue property without permission from the owners, I asked and they said they don't allow them there which is fair enough. It's hard work digging on the property but if you find the right spot it can be very rewarding.
We also go specking when the sun is high after rain, can see stones from 20 feet away in the right light sometimes. They can be anywhere in Sapphire rich ground and usually in pockets also.
Got most of these from a pile of virgin wash they dug with the excavator and dumped near the tubs for us.