****o Everyone. I am a PTA member in my children's private school. The school has built a simple soccer field and they need to install a sprinkler system for it. We do not know whether we should use external/above the ground/movable sprinklers (does such thing exist?) or install a sprikler system under ground. There is a chance that the school start construction work in the soccer field area in 1-2-3 years (??), the school is not sure yet. What is your advise for irrigating the soccer field? Tha...