For my money both Cockatoo and Kulin Islands in the Kimberleys take the prize for roughness and undulations
Nah, they are fine. Koolan used to be a little hairy when the wind swung to the west, but otherwise they are fine........they hardened the last 200mtrs up a bit, so you can use the full 800 now. loved hopping off the end and over the cliff at MTOW on a hot day with 10Knts behind ya. glad I was driving a Caravan and not an airvan though.
