Hi Racer,
I wouldn't sail off the Cairns Esplanade unless you were sure of the tides, too easy to get stuck in the mud.
Yorkey's Knob and Holloways Beach are where the locals go, Yorkeys my old stamping ground is over run with kite tourists, nothing wrong with that just hard to get parking etc, I now go to Holloways bout half way along the beach.
If on family holiday go up to Mossman Gorge for a look, do the tour around Port Douglas and have a sail there, there's a park at the end of Barrier Street where the locals go or from the sailing club.
Of course lock in Green Island

I'm off the water this week but will be around next week. Should be someone at Holloways each day with a few on the weekend and mobs of kites at the Yorkey's circus.
Cheers Bob.