If you want to duplicate your sailing event (in case e.g. you want to create a similar one with only different dates) you have to
1) Sign-in to your soSAILize account and open the event you want to duplicate.
2) Click on Options button at the right side of your event title, just by the "Like" button.
3) Click on "Duplicate" option (under "Edit Settings") of the list
4) Apply the new settings of the new event (e.g. modify the dates)
5) Click "Save" button and that's it. Your new event has been created.