Hawks will not be at all deterred by electronet, unless you put a cover OVER it. You could build a standard run, and cover that with any number of materials to keep hawks out. Then, based on how secure the run is, you can run some electric wire around the perimeter of the run to keep out ground predators. It all depends on what your budget is, what your flock goals are (# of birds, available space, budget). Narrow down some of those details to help you decide which way to go. It doesn't have to be a single choice. I have a covered run, and an open run. Have used electronet in the past but had to build a run b/c of heavy hawk predation.