I mulch all prawn, crab, lobster, oyster and cockle shells mixed with pellets. Works for me. We got 1st, 2nd and equal 3rd on the Police Variety Comp at Pt Hughes this year and bagged out a week later at Pt Vic in 1/2 an hour. Largest fish 500mm (most double headers)
Cheers
Sounds like you know where to find the whiting , whats your secret ?