I have one of the plastic ones, it was constantly falling over and I complained to my DH. He took it to his garage, when he brought it back he had weighted it down. He turned it over and used several NUTS (like you use on bolts) all the same size and used a strong type glue and placed them like clock numbers around the bottom of the base. It now stands very steady and no more tipping over. The bolt nuts are the same thickness as the void in the bottom of the base. I have used it for several years like this with no problem.