So, I have a question and I keep getting mixed answers. I was always told to drain my pool below my returns by many people. However, the pool contractor that I am using says I should not drain my pool at all. He said all I need to do is plug my returns and my skimmer baskets and that he has longer plugs that also forces the water further down the lines. Then he said just drain my sand filter and pump itself. He said he closes 100's of pools in my area and has never had a problem doing this and never drains the pools at all.
Also, I have a custom tension cover that is going to be installed this year and the pool contractor said the water cannot be drained below 1 foot to 18 inches or it voids the warranty. My returns are at least 18" below the pool deck.
I live near the winston salem area in North Carolina. I believe the frost line is like 6" where I live and my lines are all 1ft or more inches below the ground.
Should I be OK not draining my pool at all and just sucking water out of my lines after they are plugged?