Was looking at an orchard a few weeks ago that we are setting bees at...they had a spray head at each tree. After seeing that I am now thinking about doing this...on the established trees run a 8 or 10' spray head about 4-5' from the truck, this will cover the root zone. On the younger trees I will do the same thing except do the hunter drip retrofit kit. When they get larger just swap out for a spray nozzle. Any thoughts on this? It certainly would be a less expensive/labor intensive vs having to put 2 bubblers per tree. Also, it would eliminate issues related to having a bubbler so close to the truck as the tree gets larger.