Hi all. I just found this site yesterday while doing some research for HDPE pipe which is starting to show up in our area more frequently, especially 4"-8" sizes on large main lines. The info put out is variable and spot on and I like the approach of being able to exchange information. My name is Hayes Davis and I live in the Visalia, CA area. I am not a true "commercial" (own company and having to bid jobs) irrigation professional since I manage the irrigation department of a good-sized school district; 45 sites. My background includes installation, maintenance, CAD design (stickler for as-builts), re-design (always adding/deleting buildings on a school district) and inspection of areas contracted out by the district. I work with automated (120 controllers alone in the district), manual (most are 50+ years old) and quick-coupler systems. I have an A.S. degree in OH with an irrigation specialty. I've been in the irrigation profession for over 25 years and find that I am still learning. Like I said before... always looking to learn more so I guess that qualifies me as a "sprinkler geek."