Because the Dutchman blades are supported and guided using a “Tube within a Tube” design, the blade will always want to follow a straight-line travel path. All the blades are pushed into the ground; the torque is compensated on the tower. Blades, when pushed into the ground want to spread outward if allowed. This is why most spade blades will spread after a while on the bottom. This “Tube within a Tube” design prevents the blades from spreading and keeps the blades overlapping for years.