Onslow fishing and mudcrabbing- help needed

Hey guys,

had a last minute shuffle of plans from Exmouth to Onslow for annual fishing trip so feeling a little unprepared. Heading up in a couple of days and looking for any pointers for Onslow? Assuming around Mackeral islands would be pretty smashed but how about the other smaller islands closer in to the east? Or best to head west to Long Island areas. 
also seeking info for mudcrab options either hooking or drop netting.. 

appreciate any help 

cheers