I literally just came back inside from rolling two of these
bases with umbrellas from morning to afternoon sun protection for the pool. I don't have cantilevered umbrellas, but instead have tilting umbrellas so I can provide the maximum shade where I want at all times. The area around our pool has zero shade and these are a life saver. We furl the umbrellas if there is going to be strong wind, but they have never tipped over in the 10+ years we've had them. You can literally roll them with one finger.