You should have just bought him a pair of cleats for his birthday.they are 8 and 6 so their time will come. We have a very steep hill in our yard that I don't want them mowing ever. There is a creek between us and our neighbors so we have lots of uneven ground to mow. Mr. Birch slipped and fell twice and the lawn service was hired immediately after the second fall. He escaped injury twice and I didn't feel like tempting fate by giving it a third shot at him.