Thoroughly recommend staying at Killiecrankie (northern tip of Flinders Island). Flew down in a P68 from EN about 5 years ago. Grass strip, in the lee of some hills that caused a few bumps in the strong SW airflow (the tail end of that SYD-HB yachtrace storm).
Contact from memory was Alf Stackhouse, and he was building some accommodation there at the time. Very generous and helpful. Killiecrankie bay really is