How do you catch a bogget?

You can't catch a Bogget because it is a mythical creature. The online Urban Dictionary describes it thus: A mythical creature living in, near or around the Blue Anchor of Helston, Cornwall. Similar to a pixie or the like. According to "Bob" Robert Standing, who is a well known face in the local area, regulars at the small pub 'The Blue Anchor' used to fool people into believing they went 'bogget' hunting, and would convince small groups of people to meet up for the 'bogget hunt' - Needless to say, these were usually clueless tourists!