Put on your back brace, heavy leaf removal can be hard work. At this stage, vacuuming through the skimmer or using an automatic pool cleaner are very ineffective; both will clog up too quickly. The method of choice for the pool janitor is using a leaf rake attached to a telescopic pole. Slowly push the leaf rake along the floor, scooping up leaves into the bag. Work the pool in sections, trying not to create leaf-stirring currents. It takes practice and a strong back, but it can be very effective.
Another method is the use of a Leaf Master, a product by Jandy Industries. Attached to a telescopic pole and a garden hose, the Leaf Master uses venturi action to suck leaves up into a large attached bag as you roll the unit over the leaves. It's slow going, but you won't have to stop to empty the bag too often.