On the topo map you will notice a boot shaped area of bush to the south of the farm gate before Cronan Creek. The track skirts along the back of this area before turning east at the heel. Locate a tiny box shaped structure on the map just under the toe of the boot which is a gate and the best place to cross the creek to gain access the ridgeline.
Proceed through an unstable rock slip area, veering north (left) toward a fence. As you will know from the map and the steepness of the track you are now on the ridgeline and the walk is really just beginning. We followed the ridge track as best we could but got off it in a number of places which wasted some time along the way. I was surprised by the amount of scrub during the walk, especially in the last 1/2 kilometre before Mt Earnest. It was a warm day (26 Celsius) with little wind and I did drink more than I normally would.
We reached Mt Earnest at 10:50am and after a long lunch departed at 11:20am, retracing our steps back to Cronan Creek. As stated earlier, a number of people choose to do this walk as a circuit but we figured we had enjoyed the best the ridgeline had to offer (from a hiking perspective) so were happy go back the way we had come. The descent was an unpleasant affair, made difficult by scrub, rock, rubble and leaf litter on the surface of the track. We reached Cronan Creek at 2:30pm and were glad to be walking on flat solid ground again.