You can use this form to change sign-up details for ok events. First enter the event name and your sail number, click the boxes to either erase your entry or change your doubling option and hit the submit button to commit your changes.
Selected: nationals.
Event: choose the one that applies 

Sail No:  
  erase your whole entry
Doubling option: change to.....
  yes
  no
  already fixed up, thanks!
Make the change
Reset form