The trailer apparatus of the present invention includes a frame suitable for holding and supporting a livestock implement from a position above the livestock implement and a pair of actuated wheel assemblies which can extend from a retracted position to an extended position to support the livestock implement for transport. Each wheel assembly includes an arm which has a proximate end and a distal end. Each arm of each wheel assembly is pivotably mounted to one of the side members at the proximate of the arm. Each arm of each wheel assembly has a wheel rotatably mounted to the distal end of the arm. An actuator connects between each side member of the frame and the arm of each wheel assembly. The actuators are configured and controlled to extend and retract the wheel assemblies.