Load your trailer heavier in front (unless otherwise directed by the trailer manufacturer) The trailer should have about 60% of the cargo weight in front and 40% in the back. Secure your load to the trailer using rope and tie-downs.
The Superman Clone is one of the major villains of Superman: Doomsday.
The enemy that accomplished the most, by actually killing Superman, is the raging monster Doomsday. Darkseid, one of the most powerful beings in the DC Universe, is also a formidable nemesis in most post-Crisis comics.