Be safe on the water. Make sure you have all the appropriate safety equipment, and check the weather before you go out. The bureau has Gulf Water forcasts and even satellite imagery. Be safe and carry an EPIRB and be aware of the changes in 2009 http://beacons.amsa.gov.au/

And check here http://www.pir.sa.gov.au/fisheries/recreational_fishing/catch_limits_and_legal_lengths for your legal catch sizes if you are unsure. Inspectors visit most ramps in the state and you would not like your days fishing ruined.

There are also regulations about the type of equipment you can use http://www.pir.sa.gov.au/fisheries/recreational_fishing/fishing_gear/permitted_device