Im sure intentions are good in using the proper design, trying to water just the grass. But as I mentioned before those spray heads almost always get the sidewalk wet anyway. It really doesnt matter though, because that water isn't wasted. It runs off of the sidewalk and onto the lawn. [
] Another point to consider is that 3 or 4 large rotors could replace 15 to 20 spray heads and possibly eliminate the need for a zone or 2. Maybe the proper design should be reconsidered? After all, the proper way for a lady to ride a horse use to be side saddle... Just a thought...