I went 3 weeks ago on the hawkesbury and set some, end of the day we went to collect, I small tinnie done the bolt from that location to a near point where they appeared to fish but kept looking at us. Out of 8, one was missing, one had a massive hole in it and the rest were there... I think we interrupted them ... I've heard stories of psyco lobster fisheries catching people red handed.. Pull up alongside em and jump in their tinnie and strike there floor with an axe and leave. I'm not saying that's the solution but that'll f.# k em.
It is dissapoibting though, ya best like someone else said put em in and flick plastics near by