Paul,

One suggestion would be to contact Dick Bradley the owner of "Soaring
Safaris" in South Africa. Dick and I both used to fly in the
"Rhodesian Championships " if you can believe it back in the 1970's !
If anyone knows of any remaining operations in Zimbabwe, or of other
ex Zimbabweans who might know anything about any gliding there today
it might be Dick. I seriously doubt that any kind of soaring takes
place there today - a huge pity as I can remember great 300 and 500 km
contest days almost every day in October each year ( out of the Warren
Hills airfield south of Salisbury
( now Harare) . Good luck .

Ron.