its not hard to find at all , I dont know the exact bearing but if you were to follow the markers that break left at the top of the brisbane river you will run straight into it. Essentially , if you head out at low tide from nudge to go to the top of the river , you will need to motor nearly straight past it to avoid the massive shallow bank that extends out from the airport. Check your beacon to beacon. Sorry I cant be more specific in terms of a waypoint.