Wow, that is zoysia? Nice!! I have never seen it cut that low. Most of the zoysia lawns we treat are mowed to high. Do you think it is a more disease/drought tolerant turf than the dwarf bermuda's? I treat some riviera lawns, and they are extremely tight & dense. Not much weed competition in those lawns. I know there are different varieties of the zoysia, but we just don't see very much of it around here.
I agree about the boomless nozzles with bare ground control. We have to deal with quite a bit of wind, and a lot of the locations we spray are smack dab in the middle of a wheat field. That is a good idea to make the boom out of pvc, seems like it would be light weight and resistant to the bare ground chems. lasting a lot longer.
...as for me and my house, we will serve the Lord.