That spot I fish always produces on the top of the tide, usually in the morning between 5-8am.
Here's a good size whiting I got there as well from this same session, also another good bream at the same spot from a previous session. The whiting was on the run out tide after high.
I have been fishing the Hacking since 2004 but not really with much success until I followed Yowie's advice: top of the tide, when it coincides with the early morning. Seriously, on some mornings it has been double hook up after double hook up.
All on fresh live nippers pumped at Maianbar. I do berley up though with a mixture of chicken pellets soaked in salt water with tuna oil, seems to work a treat in the Hacking.