Three of us had an amazing tramp through from Hankinson to George Sound, such an awesome place. It was tough as warned, but the scenery and isolation was bliss. The dense bush was most beautiful (but at times brutal walking through), and the wild life amazing, think we saw the lot (Deer, Weka, Morepork, numerous robins, tomtits, fantails, dolphins ...). We even spotted a black fantail which I understand are quite rare.
We arranged all water and helicopter transport through Fiordland Outdoors. Highly recommend doing it all through them as it pays off in logistical movements of vehicles and when things change as they did with weather. They are also so helpful, accommodated some tricky timing and their communication is superb.