What type of pen to sign board?

Just wondering what type of pen or pencil everyone uses to sign their boards after finishing shaping.

A thick black Sharpie…no, a soft lead pencil (HB), onto the foam.

Howzit RISurfer, you can’t use any pen that’s alcohol based, It’ll bleed,so if you need to use a pen it be a water based ink ie:Posca, Zig,etc. All the shapers I work with use a pencil like Ghunt stated. Aloha, Kokua