Hello Guys and Gals, Looking at taking the next step on a small construction site. Total site is about an acre. The basics of the spec's are Irrigation lawn and beds. 30 trees a few thousand bedding plants and 10,000 SF of sod. Also included the tilling of the site to add amendments to the soil along with the final grade. The irrigation system goes in first. Trees are big enough to require a 60" to 75" hole. So what is the best method of protecting the irrigation system when providing the soil preparation? I have seen folks do stub ups with PVC then add the heads right before laying the sod. The spec's do call for flex pipe as well. Any tricks of the trade to help prevent doing the riser work twice? BTW this is trench work. Many Thanks.