Speaking to the blokes on the whale watching boats, you have to come across the entance to the creek on a high tide. If you miss the tide there is a designated mooring and anchoring area to the left of the pub, Marked "A" on the picture.
Come in on the leads staying slightly left of centre, definately avoiding the area marked "AVOID" that green cardinal mark is in only two feet of water as the sand bank there has grown huge.
Continue till nearly abeam of the wharf before turning upstream, all cardinal marks are now good, it's only that first green one that will cause the boys in the pub to chuckle if you stray.
Hope the pics make it a bit clearer.