The thing I hate the most about water tubes " at least the ones I'm using" is snapping that cap back on after you fill them. What a pain in the butt. The only way to close them is to stand on them, which could puncture them. This year I tried some of them aqua blocks. I didn't care for them. They were too flimsy. If you had to move them, even just a little bit, the tops would pop off. This year I bought one of those mesh covers to let water through, as my solid cover was ripped to shreds after last winters 5ft of snow on it. The only problem is the cover was not quite long enough to cover my fiberglass steps. That was my fault. Now I don't know if I should try to send this one back and buy the next size up, or try to cover the steps with a small tarp? This closing was a pain. Filix.