looks like a good solution
I built my own a few years ago.
I've been meaning to swap the wheels out for something larger, but as I only use it in the garage, and just outside on the drive they've been OK.
The removeable planks of wood are there to hold a bin at the right height to run the engine in water.
I could be persuaded to build one or two I suppose
But would need to cost them first.
Nasher.