Hi Sky,
Did Johnny ask you to find the compass for him yet? If not - Johnny wants his compass in exchange for the loan of his metal detector. So (if you haven't already done so) be sure to have read the decoded page of the journal which mentions the Caridad wreck, and also the book in the basket by the sofa back at the resort. That triggers the conversation.
Johnny mentions that the notch-eared monkey has his compass, so read Sonny Joon's notes which mention the notch-eared monkey, and which game it plays. It's the coconut game at far left.
Once you have that information, you only need to win the coconut game once for the compass to be offered as a prize.
