Streamline the load: Long symmetric loads (two M151 trucks rigged nose to nose) fly crosswise to the direction of flight causing immense drag on the aircraft. Loads tend to stabilize in the center of gravity (CG), located in the first 1/3 of the load. By adjusting the load and, if needed, by adding weight, it is possible to move the center of gravity toward one end or the other. The lighter tail end of the load will act much as the fins on a dart; the heavier end of the load will "seek" the direction of flight and the load will stabilize.