Not currently doable. From Palliser you get to a gate that enters Maori land I believe this is locked but if not keep to the formed road and obey any instruction on the gate. If it says dont go then dont. Then you cross onto Doc land just before a big hill climb. Last time I was there the top was horribly scoured out and probably doesnt even exist now. Then just as you get down the other side you reach a locked gate made of railway iron. You can see white rock from here. The landowner that locked this away has since died but access was never restored and chances are sllim.
Sanding your knuckles before starting work can help. That way you cant skin them