Commerci Bosses and drop rates?

Commerci might actually have a de-spawn command at the end of every individual round. I don't know what happens if the timer runs out and you have one of those monster life mobs on the bottom of the ship though. If it is killed if time runs out then that confirms it.

On normal Herb Town Voyages on my Mercedes, who cannot kill Livyatan, when the timer ends, the boss is "de-spawned" and nothing drops.