its used to be a thing back the day there ..and i have met people that have sailed form mainland to KI and back for the ..which is pretty full on as it gets choppy ...
keen to here some local insights !
In the mid '80s there was a windsurf race from Emu Park to Keppel Island called the Keppel Crippler. We used to race over, party at the Wreck bar then sleep under our sails overnight and sail back the next day.