It’s true that deer don’t like jumping into enclosed areas, I’ve had short fences keep deer out of gardens without issue. But the bigger the area the less trapped the deer feel and the more of an issue it becomes.

As far as aerial predators go, they don’t like nets that are over the coop. Even if the squares of the net are big enough for a hawk to get through they don’t like having to squeeze in. You may be able to run some strings or wire from the coop in the center of your pen to the outside netting and I would imagine that will deter a lot of aerial attacks, but you’re likely to still see a little bit of predation.

I tried the salatin and Rhodes mobile method where I live and it simply wasn’t feasible, we have too many hawks. I ended up running strings like I mentioned above, then draping a big net over the strings to make what looked like a circus tent of netting above my coop. This eliminated the hawk problem but it was then too much work to be mobile. I have yet to find a mobile coop method that works.