65,
In my mind every pool needs at least 4 returns and two skimmers... Each skimmer needs to be plumbed back to the equipment pad and be controlled by an individual Jandy valve.
The basic idea on returns is that you want one on each "wall" of the pool, so that they can be pointed in a direction that will cause the pool water to flow like a flushing toilet bowl, but obviously at a much, much slower speed...
Thanks,
Jim R.