Know and respect the rules, please.
www.rms.nsw.gov.au/maritime/safety-rules/rules-regulations/know-the-rules.html 
I'm aware of 2 circumstances yesterday where kiters did not respect the SLS and NSW maritime rules regarding kiting in the flagged area. There is no excuse for it if you live in Australia, everyone should know the rules, between the red/yellow flags no vessels or surfcraft, and the buffer zone extends 60M either side of the red/yellow flags too.
The clubbies I spoke to don't worry too much about the 500M rule on open ocean beaches, and say that 300m is ok by them, but basically if you are doing downwinders look for flags and got out past the surf line and go around them giving at least 60m clearance either side of the flags. Nippers programs start in a couple of weeks, but weekend patrols (flagging and monitoring of swimming areas) started on all beaches in NSW yesterday.
Penalties can be harsh, and can include bans on kiting in your local area, as well as heavy fines and loss of gear.