Nick, if you are going to walk to Pillans from Bernachi, there was an old 4wd track leading nw from near the Bernachi end of the dam to the right of the rocks. This goes through Thompson's rivulet and on to a ford in the Ouse river.There was a bridge hereabouts many moons ago to give access to Allisons hut (no1)
which is just under little Splitrock.
If lake Augusta is not at a high level the easier way is to cross the Lake on the 4wd track starting at 55s463276e 5365737n. There is a foot bridge over the James river at the ford in the middle of the lake bed.
From Allisins hut climb following track to n then nw till over the hill when you can see a fair way out in good weather.Approaching lake Julian ,Kerrisons hut can be seen to the left along a spur track.both this hut and Allisons are open to the public. From Kerrisons heading north anound the small lake then west will give access to Pillans shoreline.An old track to the shore may be found in this area,and I think the hut was meant to be built on the shore but vehicles became bogged so the hut was built at present location.
Another good access to the eastern side of Pillans is from a start at the sw end of Augusta 55s459094e 5364096n then up the track past huts alongside the lake and on nw to Stumps lake (named after "Stump "Jordan )then past Wadleys lake (for Reg Wadley) continuing on to meet Pillans where a crossing can be made at calf deep in summer.55s 451825e 5370303n.
Yet another approach is from the Lake Fanny track ,leaving the track at 55s450583e 5364192n just past Christy's lagoon and heading basicly north up Christys creek , past Lunka lake and small lagoons to the southern end of Pillans.
This whole area is nice walking ,if a little rocky

but very exposed and best visited in nice weather
Hope this is of some help.
Flyfisher
If you don't know what I'm talking about, then you need to drink more.