Seriously plenty off Hervey Bay out past Fraser, off the coast from RainBow Beach, whale watching boats might be a dead give away but think you may wanna stay clear of them, heard some have Rangers on board, Like rdarby says use a bit of common sense, in everything you, believe for boats it's 100 metre exclusion zone but you may want to check for aircraft, I also heard they have spotter planes up sometimes so their not cruising around aimlessly looking so keep an eye out, sure you can spot one from height way away from any boats. good luck and post a pic or two if you can get any, with zoom of course.