Bower is cheating with all those water buckets!
LOL - just kidding. I do the same thing with horse troughs full of water, or at least am much as I can. I have never seen mass used under benches on a commercial scale. It might be difficult to do in a cost-effective manner. And it's the same with anything that costs more, it might work better on a smaller scale, but not translate well to a larger scale.
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