Howzit bud.
There are a few in JHB - where are you based in JHB?
There is a club that is centurian based (I would reccomend the Pretoria clubs - as they are the oldest and by far the most experinced - not to say that you could change them-
).
Also you will tend to find most clubs will fish North of JHB and Pretoria although saying that they do fish the vaal.
Have you got a boat - this is a key aspect to artlure fishing.
Maybe you should come along for a ride with me on a club outing to see what it is all about........
Fire away with the questions.
I will so long make a few enquries about JHB based clubs for you.