Thanks Richard. I asked the ranger a few more questions regarding walking from Yellow Pinch and she sent me more info, unfortunately it was a bit late coming and I had made alternative plans, but will do it next month now. I will paste her latest email for reference.
Dear John,
If you want to get to the summit or traverse the mountain, the other way is to go off track from the Burbank campsite (there are two campsites along Cronan Creek – Burbank and Forestry), cross the creek, go along the old snig track and then onto the spur that leads to the summit. You can then go back down the same way or you can continue in a southerly direction along the ridge and then follow the ridge down to the Cronan Creek waterfall and join up with the Cronan Creek track which will take you back onto the same fire break as the one you came along to get to Burbank campsite. This also does not take you onto private land.
Yours sincerely,
Diana