Well the guys at work go here to fish, so we could give it a try. They are heading to a new spot this weekend, so will find out what one is better.
They fish at the river mouth, Said its a 4wd track but their city cars make it along it. Short walk to mouth.
[img width=400 height=189]http://matt.loudas.com/Tangimoana.jpg[/img]

If that doesnt work, try this:
http://matt.loudas.com/Tangimoana.jpg