The advantages of renting a rotary tiller are many. A Coates rotary tiller can transform bare land into a cultivators paradise in only a couple of hours. A petrol-driven rotary tiller is the secret behind garden abundance for acreages and small holdings, and is often the first spring-time hire for Coates customers around Australia. Rotary tillers are for soft or sandy soils, whereas rotary hoes are designed for hard, compacted ground,whereas.