The pair USDZAR has quite good positive swap, which can lead to additional profits (carry trade).
The last CFTC report shows that Commercials have DXY (dollar index) 10,674 long and 59,033 short. It is almost 1:6 ratio, so it can lead to correction on DXY.
Presented idea is only an assumption, one of many possibilities which can happen. The price can do anything at any time.