Eyeball direction?

[waterbear]

I have an hourglass shaped pool and both my returns are in the shallow end on opposiite walls. I have them pointed in the same direction which causes a a counter clockwise circualtion in the shallow end (keeps my steps clear of dirt) and also causes a clockwise direction circulation in the deep end. I have my main drain and simmer 50/50 and only get a little dirt in the pool to the right of the main drain that I have to vacumn about every 3 or 4 weeks. It took a bit of experiemting to come up with this but it seems to produce the best results in my pool. The eyeball that is going across the steps is pointed downward and the one that goes toward the deep is aimed higher, but not high enough to ripple the surface. This causes enough circulation to keep the swim ledge in the deep end clear of dirt.
I experiemented with different settings of the main drain and skimmer and found that in my pool the 50/50 setting kept the pool clean for the longest time.