Its a bit late now i guess but anyway.. the top 20 mins or the bottom 20 mins. umm averages id say 15lb plus , my best there went over 30lb(from a boat nearby ) ,, if u are fishing the wharf itself cast to your left back up river as far as possible into a deep hole there. Best bait by the way for me has always been cheap arse dead pili's, livies havnt seemed to cut it there for some reason. Dont expect to get hits all night, u may get 1 or 2 but they will be biggens so have good equipement and make sure ya rods not just sitting there in gear because it will dissapear never to be seen again.