Find the deeper water,if your fishing the 1st lake there are depths to around 16 foot, when I've put baits in these areas I have never been bothered by the crays, anything 10ft and under they are on you straight away, don't bother with the big lake at the back, your bait won't last 2 seconds mate, they also have a little lake that used to be a syndicate, small and very weedy but some lovely scaleY's in there.