Look on the bottom of the pool. Look in the crevices of the built-in stairs. Look under the Polaris vacuum. Look in both of the skimmer baskets.
No snakes? Relax and swim.
That’s my pool snake check. After all, we live in the deep woods. Mostly the snakes that have gotten into the pool have been baby garter snakes. One was questionable, more like a young ground rattler. Buck fished him out with a net, then laid him down on the concrete for a closer look. He coiled and struck repeatedly at the net handle.
Ah, well, what can you do? We live in the woods.
If you’re going to freak out over every little slithery thing, just stay in the ‘burbs.