if fishing for game fish, long tail tuna etc. use either live gar or yakkas which can be caught on a bait jig with bread or prawn etc.
you then suspend it under a torpedo float on about 6ft trace or just long enough so the birds can't kill it, they will still try believe me. you should have this rig connected to an outfit with at least 400m preferably 600m of 10 to15kg line on it or you can get spooled if you get a big longtail. they run very fast!
while your livebait is out you can fish for bream etc. with light gear to keep you entertained.
if you cant get livies you can sit and wait and watch with a casting rod rigged with a high speed popper and cast at fish cruising by.
patience is a serious virtue when fishing off breakwalls for game fish, at some stages of the day you wonder why your even sitting there, however i'm sure that i will keep trying till a nail a good fish.
good luck!