Create a Sub Rule within rule “Treasure Maps”, named “Finders Keepers” with this text:

When a proposal that creates a Treasure Map is enacted and the Proposal includes the text “Finders Keepers” (even in flavor text), the Admin who is doing the enactment shall make a DICEX roll in a GNDT comment and include it in er Admin comment. X must be the number of Captains who voted on that Proposal, including the creator. Then assign ownership of the created Treasure Map, to the Captain whose position in the voting order matches the dice roll and include er name in the Admin Comment as well. If the assigned Captain is idle at the time of the enactment, the Treasure Map remains unowned.

This should make obtaining Treasure easier if the Treasure’s creator intends it that way. After all, if no one can find the Treasure you created, what was the point?