The biggest bass that i know of in that dam was just over 4kg, caught by 2 boys ages 7 & 9, on a pick & pay special rod with a spinner looking like a mepps black fury, in the corner of the dam near the wall just next to the reeds.
The line they were using was so thick they couldnt cast more than 5 yards.
Also saw a blue kurper of about a kilo caught past the second batch of reeds from the wall on a garden slug. (the snail without a shell). The spot in the picture above that Ian posted also has a flat gravel patch that runs out about 20 - 30 yards and then there is a drop off. When the water was a bit more clear u could see the big bass cruizing up and down this "lip", waiting for a bluegill to venture off the bank.
Best baits for this dam has been baby bass flukes, Pumpkin seed(i think it's the colour's name)worms and those cheap soft plastic black frogs with the legs trailing. as small a weight as possible, weightless being best.
At the dam wall, the water is VERY deep, with the SAPS divers at times doing their training there. Especially on the right hand side if u are standing on the wall looking towards the dam.
Also there used to be a road that ran from the big tree on the western side across the "marsh" and came out where the one parking and big gap in the reeds is on the eastern side. Right in the middle between the island and the gap on the eastern side there used to be a bridge. They didnt take it away, and either just broke it down, or its still standing there under the water. Either way that should be structure in deep water that in the middle of summer when the water get's very hot should hold the big momma bass, if you fish a jighead or something straight down from a tube.