Elongated the holes in the brackets today and while doing so I had an idea. Instead of fitting the keys inside of the brackets, I fitted them on the outside. This made fitting them easier.
All ready to test.
The result after a trial run on the leaf covered lane past next doors gate.
That was after several runs. I found going in reverse was best. Although it cleared quite a lot of leaves, it was not the result I was hoping for. I think there was two problems. (1) The leaves were soaking wet. (2) The rough nature of the lane.
I think a better result would be had with dry leaves. Also on a flat surface like a concrete yard.