Possibly check out the 2 main Berg hiking clubs based in Durbs/PMB - see if you cant sync your arrival/departure times to hook up a lift with one of the hike groups going up/coming back from the berg on one of the weekends.
looking at weekend of 16/17 i see the PMB based club will be in Bushman's Nek area according to their hike list, and I know the club I belong to Mountain Backpackers is going up same weekend to Garden Castle area.
Check out the fixture lists and see the contact details for the hike leaders:
PMB Based - Midlands Hiking club:
www.gohiking.co.za/fixtures/200911-201003.htm
Durban Based - Mountain Backpackers -
bit.ly/8TPbec