Finally completed the second wall of my project. I had a few issues with my mixer attachment I built for the bobcat, so had to take some time off the walls and focus on the machine. Once I finished with the loader attachment I focused back on the wall. I used a new approach to mixing, I also live tested my new and improved attachment which works as well as I had hoped. However for mixing up any quantities over a cube I think the tried and tested methods work best. In other words mix it on the ground or driveway, once you understand how your loader works mixing on the ground is fast and efficient.