Also, be sure there are at least 8 clear squares around the rock. Bags of bells will not fall into squares occupied by holes, trees, items, and flowers, so the rock will not produce them if they have nowhere to fall. Warning! If a resident of your town is standing in one of the 8 squares around a rock, you will also not be able to get all 8 bags of bells. Wait for them to move before you begin hitting the rock