if they all point in one direction and cause the water to move in a pattern it will make it easier for debris to go into the skimmer. I am not sure if it matters what direction as in refrence to counter or clock wise.
We are a custom pool and spa builder. We can only offer suggestions with the information given. Don't hesitate to email me if you have a questions and I will answer it as best as I can or point you in the right direction.