With the $3.5 million at stake for the correct ice out date and time, I can understand your concern. Of course with dinner for two at a local restaurant or a gift from the store, or having your name posted as having guessed the closest to "ice out", it really doesn't matter. Fact is that ice out is when the Mount can travel ice free to all its ports. It's a fun thing, not something that anyone is going to get rich on. Don't think you will find anyone that will buy ice in for a second time, and then a second ice out. An interesting thought, albeit a fleeting thought.