@skihart this is my home site called Satellite Dam, it is near a town called Pietermaritzburg, about an hour 20 minutes drive inland from Durban. You can find the lake using these co-ordinates; 29°22'34.01"S 30°26'20.76"E.
We dont have many sites in South Africa but most are listed here, http://tinyurl.com/bro89vv.
Check out, http://www.lakegrappa.co.za/, http://www.mofam.co.za/a-waterskiing.htm and www.waterskisa.co.za.
South Africa should be a pretty cheap getaway once you are here!