I am getting the patio done at the front of my house in a couple of months and am going to put up a lamp post at the same time. I have currently done all of the inside wiring, and have installed the conduit to get the wire outside the house so that it can be buried under the lawn and run to the area of the lamp. I know that I will need 12" sonotube (which I have) and that it needs to be filled with concrete. What tricks are there as far as erecting the lamp post in the concrete, and to make sure that it is straight and stays straight? BTW, I am planning to being the conduit and wire all the way up the sonotube until it is above ground so that the wire (outdoor variety) is fully protected.