Fish there quite regularly during spring and summer - fishing very slow during colder winter months, but not impossible.
Make most of my catches off the wall with weightless flukes (watermelon gold/red, junebug) choosing a colour depending on water clarity. Have also had success with big curly tail grubs (Zoom Fat Alberts) that give off bit of a vibration.
Jerkbaits fished erratically also work quite well, and don't forget to throw a spinnerbait in the shallows off the shore next to the road.
Over the last 2 years I've seen a lot of people removing fish from Emmarentia, and I've also experienced a decline in catches.
My biggest weighed in at about 1.5 kg, but the average size is under a kg, so landing fish off the wall won't really be a problem.
The biggest bass I've seen must have been 3kg+ earlier this year. It was just cruising close to the sluices, but I couldn't entice it to bite.
Good luck
Cheers