I have some neighbours who like to fish. These two seem to adhere to size limits, but there is no limit on species. The ugliest reef fish you've ever seen make it into their esky. Np species is off limits, despite some very painful looking injuries that have been sustained from being spiked.
I've seen some great bream and flathead in their catches as well. All with the worst looking bait I've seen - those cheap black prawns from the asian fish shops.
We've spoken about foreign bait, size limits, species to throw back etc. What more can you do than offer decent advice?