smoked,
Wellington Point park is right adjacent to the Boat Ramp and Jetty. You can walk out to King Island from the point. Shore based it is pretty shallow in most directions. I haven't fished the area so don't know any spots to give you.
Here are a few pics of the area from Google Earth/Panoramio;
The Jetty (faces East and adjacent to the boat ramp to the right)
The walk out to King Island
Mostly shallow mud flats
The Brisbane River ports are visible to the NW
And a piccy taken from Google Earth of the Park area.
Cheers
Dave