MBN MiniDump ( Minibagger Dumper / Mini Dumper / excavator dumper )

I was thinking of making a dumping trailer for my 3 ton excavator. But thought i would see if anyone has any experience using one and if they thought it was worth it? I'm always tracking tons of rocks or dirt on my property and on jobs and don't have a skid steer or truck, and the dumpers that have a decent capacity seem very expensive. What do you guys think? I was thinking of making something like in this clip but

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