Originally Posted by jcr4au
I tells the customer heads are designed from the manufacture to spray to one another typically in a square or triangle layout. To not have head to head coverage causes them to be inefficient if not useless. If they need a system with a non-head to head design then I let them know I am not the guy to hire.
It's really about uniformity of distribution, and how a head-to-head arrangement can maximize it, which, in turn, can lower watering costs.