How do you delete pilots?

I don't expect many of you guys to on on christmas but if you are please tell me how to delete player accounts(?).

Like a save game? They're stored in Home/Library/Application Support/SketchFighter, and named Game <number>. I'm not sure of the naming scheme, so be careful with which ones you delete. Make a backup and check in SketchFighter to see if you got the right one.