After reading other forums and duplicating some of the other bx dollies, I ended up making the following for my backhoe. The bx designs were only 48" long and after my initial attempt, I realized that I needed approx 12" more in of length. Keeping in mind that I'm not that experienced, it was much simpler once I built the extension. Afterward, it moved around my garage with relative ease. Happy to post more info if needed.