Freezing droplets of water won't do anything. What you care about is a significant volume of water in an enclosed space, since water expands as it freezes and something has to give. If you store it vertically, you are not going to have a problem. Even if you have a little water trapped in the block, it has plenty of room to expand when it freezes...
2008 Bass Cat Pantera Classic
2014 Mercury Pro XS 200