To you guys that operate an irrigation business or have experience working with them. When they come out to mark the system for bed edging or digging, do they mark the heads and the lines or just the heads? I don't do irrigation work, but whenever I'm going to be working in the beds they must be marked. Most of the companies around here just mark the heads. How do you guys go about edging the beds without the lines being marked? Even being careful I've cut a few lines so this year I decided not to even come close unless everything is marked.