Water bags are ideal for keeping your winter cover in place. They can do so even in windy conditions. These bags are made from durable vinyl and feature UV inhibitors.
They are also excellent for keeping pool covers from moving or flying open when it's too cold to use. They prevent them from blowing open when the wind hits the pool.
Water bags are prone to leaking once they start to appear. This issue usually occurs when the bags are left unexposed to insects or water. Since these objects are very durable, they can be fixed with a bit of silicone or a vinyl patch kit.
1) Leslie's 8 Single Water Bag Blue