As for rips - a strip of flat water, or slightly outwardly rippling water, across an otherwise surface of waves, means there is a rip running.
Discoloured water is another sign. Even swimming too close to one side of a rip can be dangerous as they draw water from both sides and it feeds into the main rip channel.
Don't take the risk - go along the beach.
If caught in a rip don't try to swim against the rip back to shore, but let the rip carry you out until the current subsides.
Then swim parallel to the beach for 30-40 metres before swimming back to shore. If you get tired or become frightened, stay calm, raise your arm, call for help and wait for assistance.
In terms of seeking to help someone who may be in trouble it comes down to self preservation.
"If you are capable of it then go out - if you are not and have any doubts then don't, because we could have two on our hands."
Seek assistance, call for help.
Basic Points
•Always swim between the flags
•Look and take notice of the signs at the beach
•Ask a lifeguard or lifesaver for safety advice
•Learn how to identify a rip
•Swim with a friend - never swim or surf alone
•If you need help, stay calm and attract attention by raising your arm above your head
•Never enter the water if you have been drinking alcohol or are under the influence of drugs
•Wear sunscreen, seek shade and stay hydrated