First year beek with only one hive, so take it for what its worth.
I do have one with the slotted bottom board, the Ultimate Bottom Board for $14.95. Yes, that is the name. It has pegs to hold the hive in place, so I haven't had any movement front to back. Side to side it has moved slightly, but only when I don't get the hive box completely free from the next one down. My bees really love to glue everything together. I have watched bees seem to get stuck in the openings at the front of the hive, but they are able to get out. Seems OK for me, but I haven't tried to close it up for winter yet.