Let's share thougths on ways to discourage theft, or joy riding, from a beach cat pulled up on the beach & left unattended. Contribute what works for you, or simply what youve thought of or heard of.

Methods I have used & heard off:
Drop the sails and trust
Detatch dagger boards and rudders (possibly take rudder along, or hide in bush)
Leave a note - Please don't steal my boat
Pay a local kid to sit on the boat
Take sails off
Chain to a tree

Have any of these worked well for you?