But yes I would try a couple of Tuna heads in the bait basket.
For me its way too early at the moment unless you want to just put the time in. They will be coming in their thousands when they start to walk.
Just research what happened last year and about what time.
The word is its going to be awesome.

 Try orange roughy heads and blue mackerel as an alternative to tima heads.  Its been a bit slow for us we like to think because of the full moon last week.  Got six on the weekend so hopefully things picking up a bit now.  Out again in the morning to have another look.

 The bait  and all  your gear  is fine.

Wait  another month and it will  happen!

I dont  bother untill there is bulk  crays (december).

Keep  an eye on what the pros are doing .

 Wouldn't get too hung up about what bait you use, if they're about they will find their way in. I've never bought bait just used the heads of what ever we catch baldys snapper etc in the baskets tie in Jewy heads with light rope or cable tie through the eyes

Fresh bait that has been frozen is best, not stuff that has been thawed and left in the pot for days. Fresh unfrozen bait still has blood in it and therefore is attractive to wobbies

Thanks for all the input guys. Will probably tweek the bait a little and just persist.

 We only saw two in four pots this morning plus remains of a shell that an occy left behind.  One of the two had tar spot and went back.

Randall,
I would be happy to see a head at the moment to know I'm on the right ground.
What sort of ground should I be looking for to place the pots on?

Plenty of guys potting that are going a few days without seeing a cray. If you are seeing a few I would be sticking to that.

Dodgy, that's why I'm asking. I'm yet to see any signs of a cray and I thought where my pots are looked like good ground but maybe not

I've seen a fair few around the 8-10m mark while diving. Found a ledge holding massive numbers and relocated the pots there. next morning.... not even a cacka. Known ground.

Look for the usual caves and ledges on the sounder and you will find the odd cray until they start moving properly.

 We're fishing out of ocean reef and our pots have been in 10 m.  This morning we moved a couple out to 17m.  Look for the outer edge of any reef and try to get your pot as close to the edge as possible but on the sand.  If you can get out on a clear day late morning when the sun is overhead youll find it easier to do visually rather than relying on your sounder in the early morning light.  Make sure its a rocky bottom and not just weedy sand.  The stronger echos on the sounder will show that its rock.

Plenty of oily bait.  And make sure your pots are heavy enough and the rope is long enough so they dont "walk" in any swell. But ropes arent too long they risk being run over.

Perhaps leave them a few days.

And all this is what I've been told because this is my first real crack at it, but my deckies are experienced.

 Agree with Randall.  Also turn the sounder to manual and increase the range to just over double the actual depth. This will allow you to see a second echo when you go over reef and will  make it easier to distinguish the reef from the sand. 

 Same every year.2weeks- 1month boys and youll get your bag in a single pot!

 When burleying up Buff Bream - Ive seen crays munching on it. I honestly dont think crays are that picky between baits and think fresh is best or smething thats not rotten and smelly. If there arent crays in your pots maybe they dont like your pot (plastic?), not enough weight or more than likely they're just not around. 

cheers guys!