 Now, a pool cover next to fencing, that pool cover really provides the most maximum amount of protection. And your best option is an automatic pool cover, which can be used between swims rather than only at the end of your pool season. These covers are going to be motor-driven, and with the flick of a switch, they're going to automatically creep across the pool to seal out access to the water. And, I mean, some of these you can even walk across.