I have the same problem with trees, but I came up with a solution that seems to save me a lot of trouble in the spring.

A couple of years back I purchased a large round fishing net. I secured some good nylon ropes to the net and added some "S" hooks to the rope. Before the leaves begin to fall I drape the net over the pool and let it sink. I then periodically go out and raise the net to empty the leaves. When the water is cool enough to close and cover I leave the net in just in case something happens.

I live in the deep south so my leaves don't begin to fall heavily until mid October.

Hope this helps someone.