I have a 11,000 gallon kidney shape pool with a Marathon 1hp InPower three speed motor and five returns. I recently added a Poolskim USA but it was not performing like I wanted at any speed so capped off two bottom returns. Now my Poolskim is working great and so is my pool's skimmer and The PoolCleaner by Hayward is working much better even at the middle speed.
How can I tell if I am overworking the motor or effecting the water flow rate?
What is the correct number of returns and when or how many top of bottom returns are required in a pool my size?