The Arabunna were quite happy with local boating until plans were made to hold a sailing event by a yacht club. Nothing has changed. Swimming will be banned next. Aboriginals are afraid to use the lake anyway because they fear the lake's spirit keeper.
It all boils down to a dispute with the government over native title. If things aren't going well say something is sacred and stop this, stop that, stop everything. It is just bloody mindedness.
As the commodore of Lake Eyre Yacht Club says: this infringes on the natural right of people to use the lake as a navigable waterway. Talks have stalled. It seem nothing will be done until the Arabunna have their way.