Serge, I agree 110% with what Ol'Joe says.
I do pretty much the same things he does except I used the Powerball Mini for the whole job, not just for the hand holes. I also used the Mother's Powerball Liquid Polish that Wal-Mart sells right alongside the Powerball itself, but I'm sure the Alcoa polish does a good job as well. The liquid polish is easier to apply to the ball than paste, but the liquid does sometimes splatter a bit if you get too much on. The Powerball, although it still takes a little work, makes the job about as effortless as it can be.
After I was happy with the shine, I applied the Alcoa Sealer. As Ol'Joe says, this is the best-kept secret in the war against dull aluminum. I can't remember exactly when I last polished our wheels, but it was at least 9 months ago and they are only now looking like they need to be re-polished. The wheels have been through about 8-9,000 miles of driving, desert heat, and Florida rain and humidity.