When we closed last month we placed a pool pillow under the cover as we always do. Then my wife asked, what does that actually do? And while we're at it, how big should it be and how much should it be inflated?
The water on the cover displaces the water in the pool. A little helps with the wind for some people but alot can cause water to go where you don’t want it to go (out of the skimmer) & means you have to refill more in the spring.These answers seem to imply that I need to keep the top of the cover more or less dry. Is that correct? We often have a foot or more of standing water in places on the cover, which we drain before opening in the spring. Is there a reason to drain the cover often?