Keep an eye out for flotsam in the vicinity of the island?
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I’ll only look for jetsam. You do the flotsam.
LOL. Had to look it up:
"Flotsam is defined as debris in the water that was not deliberately thrown overboard, often as a result from a shipwreck or accident. Jetsam describes debris that was deliberately thrown overboard by a crew of a ship in distress, most often to lighten the ship's load."