Does anyone know where you can purchase plastic bins, which could hold sand or water, instead of water bags for a pool cover?. Last year I was at a friends house. The neighbor used plastic bins that looked like water bags, either filled with Sand or Water (not sure). They were long and straight just like the double water bags. I have looked on line, but could not find anything. I am not concerned about sand in the pool. If there is enough slack in the winter cover, there will not be any movement as snow, ice and water build up. Usually, I will pump the water off the cover unless completely frozen or snow.
I do not want to take regular plastic containers and fill them up with water. While the concept is there, the plastic becomes brittle in the cold. These were long straight plastic containers for support.