About that time of year for us "down" here. I've read on some other forums that there is a big debate on leaving water in the pool, or emptying the pool and storing the liner. I know you wouldn't want to leave the pool full of water if left out all year and you'd want to cover it pretty good, but what else could harm it? If it did freeze, I'd think the flexible liner could handle it and there's plenty of room for it to expand vertically. Any thoughts or alibi's???