Boet, not a big bass fisherman myself but I am from Witbank originally and from what I have seen and heard the pump station, the dam wall and gorge areas do produce nice bass in the winter. Baits are fished texas style and soft plastics are used. Good colours for the dam are pumpkin seed and watermelon seed. Other colours I know that work are watermelon candy and purple.
Take the time to contact the okes from Ganis angling in Witbank, they tend to know their story and are usually helpful. Ask to speak to Hussain.
Hope this helps
Regards
