Hi Bren,
Safe as in not sinking or swamping or safe as in no scumsucker stealing your sounder, radio, rods, etc.
For the former it is a good idea to keep away from the Tanga wrecks. The current really races through there & many have come to grief. Bugman can tell you more about this. Watch wind direction. Anything but SE on the W side of the island can be bad news. Try & anchor on low tide if you are planning to use your boat when you want to. This may require a short swim. Anchor on the high & you could be aground for ages. Use a bow anchor into the deep water & a stern pick back to the beach. Plenty of rope back to the beach is the go. Bury the beach pick deep at the high tide mark. Stops 4WDs running over it.
As for the latter, try to avoid holiday times. Midweek is good. I would NOT leave anything portable of value in the boat. Or anything portable of value in the tent. Times have changed.