Oh sorry Alex my bad. The water on Green Island is pretty good, whilst its not crystal clear its still good. Port Douglas is not as good as Green Island but its not bad, while Yorkies water is crap. So go to Port, or Green if you want better water conditions.
I'm headed up to Cairns tonight for a week of kitesurfing (and to visit the folks).
Last time i was at Yorkies the water didn't look THAT bad, but maybe i'm just far more tolerant of water conditions considering i usually kite at St Kilda & Altona.

Looking forward to some solid green arrows for a change!
Also, if anyones planning a Green Island trip can they give me a shout. I'm quite keen to kite as many beaches as possible in the next 7 days.