I have a 16 x 32 inground pool. The skimmer is on one side, 10.5 feet from the wall in the shallow end. The two returns are on the other side, one 7 feet from the wall in the shallow end. The other return is 9 feet from the wall in the deep end. One drain in the deep end. Should both returns aim for the skimmer, or should one aim toward the drain?