Hi all. First time having a pool over winter. I attached two pictures , first one is from when the pool was closed in November , second one is now. Seem to have lost about 6-8 inches of water over that period. That normal over winter? Obviously I Capped my return lines and skimmer I did notice during the windier fall days the cover isn’t air tight and it would be blowing underneath. Could the wind getting under cause evaporation? Guess I didn’t really expect to lose anything over winter but like I said, first time. Thanks for the help