Direct application drip is truly one of the best styles of watering, however it's one of the most problematic and higher maintence.
How far spacing will the zig zags be?
I would recommend
Netafim
It's a soaker line that has an emitter every 12" that will evenly disperse water. They usually come in rolls of 100' and 300' sold at your local Irrigation supply store ( Not Lowes / home depot) . Pick up some landscape staples, some netafim barbed fittings and your set. There are several ways to install netafim but for a border line you can either run a single line or loop the line weaving in and out of the plants to have a double row criss crossing .
If you can extend the 3/4" line to the other side of the of the tree's (200' away) and connect the line to both end points to help on even distribution uniformity