Hi there so I'm in New Jersey and I am just now covering my pool because I had surgery. So I brought a bunch of new winner pool tubes to hold my cover down. Any ideas on how I keep them water bags from getting disgustingly dirty and slimy so that I don't have to scrub them to death when I open the pool. Every year I buy new ones so I don't have to scrub them clean. Any ideas at all would be very helpful I've thought about covering them with plastic