Tips in RSA and numbers of staff are considerably lower than most other places.

You should regard the cook, tracker(s), skinner(s) and driver as a single catagory. It could well be that the tracker and skinner are one and the same person and either the PH or tracker will drive. The PH will be more than happy to take USD as his tip but the locals will prefer SA Rand. Therefore you could catagorise the tipping as:

Class 1 = PH

class 2 = Cook, tracker, skinner, driver

Class 3 = waiter & maid(s)

Hope that helps