Probably a great solution for announcements in that type of situation... Without horses around, you could have fewer speaker locations, and each much louder (such as at county fairs and motocross 1/2-mile races). But with horses, as Adam and anyone with horse experience knows, that won't work because they'd freak out if one of them happened to be too close when a sudden LOUD announcement came out. Having a whole lot of less-loud speakers is ideal, in my opinion!
That's one reason why I bumped my Moorpark "test" of the Thunderbolt to noon, in place of the actual old-time 10:00 AM which Los Angeles County used. We have the horse rehab hospital at the other end of our access road, and the place 2 doors to the east has a horse breeding & training operation. At noon, all the horses are in their stalls eating lunch, and they feel secure in there, and won't freak out as easily.
And what MAGNIFICENT landscaping at your place, Adam!!!!! Perfect green lawns, perfectly pruned and cleaned palm trees.... Had I seen that, and had you wound up coming by here, I'd have been embarrassed... You can't grow a huge lawn like that here unless you devote your whole life (and life savings) to it. Here, although our avocado orchard is in good shape, the rest of the ranch is brown grass and wild (UGLY) mustard weeds. And where you least want it, BIG cactus. Usually in places where you're likely trip and fall on your butt into
Charles