There is no way to hide your island from other pirates, and we hope you never try!
If you think someone is using an exploit to appear to hide, please email us through the game to let us know, and we will investigate.
Someone's island is hiding
If you have more questions, please contact us through the game by going to our Menu > Settings > Support. We can help you quicker this way, because the game will allow us to view your account and better help you.