Wrist Slates Wrist Slates are getting more common all the time. Wrist slates come as individual pages or the multipage version. The multipage versions are nice for recording important information like deco schedules on the inside pages where they can not be easily rubbed off. Johns Quick Tip’s: Slate Cleaner Every diver has a tip to clean their slate some use toothpaste, others scotch-brite pads and my personal favorite on I hear sand. There is actually a great cleaner that will last a long time. It is called a Magic Eraser they are available at most stores and used for cleaning scuffs off furniture and stuff. They are cheap and last a long, long time.