Never was happy with the one I purchased...so I improved it. The bottom is open to let dirt fall out and hold a longer bar if needed.
I have the same model. It's only good at holding a 5 gallon bucket .Those improvements are definitely better.
I may make another. My 8 year old asked "Dad can we build something"... sure buddy. Just threw it together from some scrap and have already thought of a couple simple things to make it better.