Yep sure is Brisbane River
The fishos usually park at the red arrow, there is a few cars in the current google earth photo. But in the above photo they are more like what I sugested above
It was caught during the 2007 Brisbane River Classic fishing tournament. Scales only went to 200kg and the needle was pressed hard against the max stopper. Tournament rules changed as a result to "photo and release"
The Navigation Lead marker in the background (between the 2 white cars) is at the yellow arrow.
River Monsters show caught a Cod in the same spot. They were on location for one night.