1 Ponsonby: Right. Now let's find that treasure chest key.
2 Mate: Begging your pardon, Captain Ponsonby, but our mission is to capture pirates, not collect pirate booty.
3 Ponsonby: And where did it say we couldn't make a profit on the way?
4 Mate: I guess it would be hard to capture ourselves too...

The English are nothing if not pragmatic.

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2020-01-18 Rerun commentary: For bonus points, they could hide the treasure, then capture themselves, but put themselves into an easy-to-escape prison, and then escape and go back for the loot.

There are certain things you just have to do by the book.