The original barrier still works, where there are no jumping off points, like trees, high ground or doghouses.
It's important to watch all the places your cat may like to hang out. One of the favorite places in our yard is the pool filter. The cats can watch the birds playing in the dead trees in the neighbor's yard.
I've added some photographs of other views of the fencing, so you can get a feel for what it looks like. Notice the difference in height of the fish tail palm tree in the corner behind the pool compared to the picture on the first fencing page.