The trails near Knysna are the Harkerville Forest and Petrus Se Brand. I have ridden the Harkerville Forest three times – it is not technical, nor is it just fire road. The initial outward leg to the sea (cliffs) takes in narrow forest singletrack with one or two bits that might test you, but nothing major at all. Really enjoyable cross country stuff, but not technical. You then ride some coastal path stuff with stupendous views. The return leg is not that interesting, being more fire road and wide track than singletrack (although there are a couple of bits). I haven’t ridden Petrus Se Brand, but this is a point to point from Diepwalle to the start of the Harkerville trail.
Ride these for a nice cross country loop with loads of photo stops and lunch etc.
One tip – DON’T BELIEVE THE BUMF ABOUT THE STREAM WATER BEING DRINKABLE.
I nearly shat my entire nervous system out in the following 24 hours!