Since I am new to aeration this year, I am seeking advice. What are the do's and do nots of aeration? I would like to eliminate any possible mistakes. I am nervous to put an aerator on a property with a sprinkler system because I do not want to puncture any of the water lines. I am assuming they are at least 6" deep, but in an area that may have erosion, the tines could easily puncture the water lines. I am also not sure who is supposed to mark the sprinkler heads? Do I request they have their irrigation service mark them? If so, how much does that typically cost? Should I suggest they do it if they are capable? Or do I mark them? Any advice is appreciated.