Sterkfontein Dam (also known as Sterkies) lies between Johannesburg and Durban and is 2-3 hours drive from either of these cities, making it a convenient weekend getaway if you are looking for some wind.
Sterkies is known for it's strong wind - 40 knots or more is not uncommon, and in this instance Sterkies did not disappoint.
Bruce Chrystal from Ocean2Air in Durban recently went there to hook up with some of the inland kiters who frequent there.