Now take your level and make sure that the post is still in its upright vertical position. It is helpful if you check on multiple sides and make sure the bubble on the level is in the middle and between the marks. Once the post is level, use pieces of wood to create a stand of sorts at the bottom to keep the post from moving while the concrete sets up overnight. The concrete will begin setting and depending on the climate should be ready the next day to re-hang the fence pieces. If the post moves, wiggle it into the vertical position and then using your stick or pry bar, move the concrete mix around so it touches the post on all sides in the ground with no gaps. If gaps form, you may need to add a bit of additional water to make the mixture more liquid. Any pooled water will be absorbed into the concrete and surrounding dirt and also evaporate as the concrete sets. The next day, you should be able to re-affix the fence to the post and it should be good as new. Before you attach th...