Its really not worth it. I know around here the company uses a bunch of illegals who work for cheap to do them. By the time you locate all lines and then bury yours, your not making much. I mean what cable company pays well anymore these days??? they all want the work to be done for free. Don't worry about power, they are required to be 18 to 24 inches below anyways. Phone and sprinklers are the important ones.