There is a campsite just off the Cobbler Lake rd, where it turns from west to south - where the the track from Mt Cobbler meets the road. Some maps mark it as a camp. Although it's accessible by 4WD, it's not as popular as the Lake.
There is water from the creek (spring) a short distance to the west, down an obvious foot pad.
The two navigation challenges that I mentioned are :
1. At the 1400m knoll, you need to head east. On the ground, it's easy to continue south then have to retrace. Also, on the map it looks easy to bypass the 1400 knoll and sidle from 1360m to 1400m - he vegetation and terrain makes that not ideal.
2. In the last major saddle (1500m), drop off to the N (left) on a footpad, drop a little then climb a lot into a shallow saddle before the final direct climb to the summit.
BTW: pm me if a gpx is of any use to you.
One other suggestion : from Koonika, I guess you'll head along the ridge towards Mt Spec - it's very enjoyable. Rather than continue all the way to the Spec summit (then have to down-and-back to fetch water), drop off the ridge at the last saddle (1500m), go directly down to the road and walk into Camp Creek for water then up to Spec. It's quicker.
- nearing Mt Koonika summit, on King Spur - Nov 2017