So I took advantage of my 6 zone controller and put in 6 zones. This was not an easy task because I already have a bunch of existing tree and I need to work / route around them. If I knew then what I know now I would have done this years ago when the yard was much more accessible.
But it all worked out. And labeling your lines as you go is definitely a worthwhile expenditure of effort!
All the photos below are of the line installations from ~Sep-Oct 2016:
In-line water filters! These go to my two subtropical zones. They are Chlorine and hard water filters
Main trunk. Notice I added a manual shut off valve (left) to guarantee the banana does not get any winter watering
Terminal of main trunk off to the branches. It was a mess because I had the original plumbing that I wanted to work with (because some of it went where I wanted, but the rest of it didn't). So this was my tough joint :)
Deciduous area. I have trees in the back you can't see (mulberries, apples, pluots, pomegranate). But I am adding some room up front for trees from the AZRFG bare root sale!