Instead of using a net and going after the leaves and similar things that get in the pool.
A mechanical system that spreads a fine mesh on the bottom of the pool. Starting on one side this net stretches on the bottom of the pool, as close to the floor as possible, and stirs up the debris that is there. When the net reaches the other side, after a short waiting period, it is pulled back at a slightly higher elevation, the furthest end being pulled in first, trapping the debris on the way back and pulling it into a disposal container built into the system, behind the wall where it’s installed.
Private and small swimming pools are unattended many times, and that can be dangerous especially for little children.
When sensors indicate that the pool has not been used for a while, a net is automatically stretched across it so that anyone who might trip into it will be suspended unharmed above the water.