I know that you get the best benefit of chemicals if the returns are pointed in a downward direction. What is the best way to turn the eyeball to maximize the skimmer function, if your using a downward left or right direction. All of them facing the same direction to create a circular current past all the skimmers or using the two closet eyeballs to a skimmer one pointing left the other right towards the skimmer. Thoughts welcome, success stories.