horizontal supports 6 the end of each back face diagonal support 7 that is not pivotally attached to one of the back face vertical supports 4 may attach to one of the rear legs 2 by inserting one of a plurality of pins through the end of the back face diagonal support 7 and one of the pin receivers 8 each back face diagonal support 7 may angle downward from the back face vertical support 4 to the rear leg 2 such that the end pivotally attached to the back face vertical support 4 is located adjacent a back face horizontal support 6 at a higher level than the back face horizontal support 6 to which the end of the back face diagonal support 7 that is attached via pin receiver 8 to rear leg 2 is adjacent the articulating mast may be folded from an open position to a closed position by first removing the plurality of pins from the plurality of pin receivers 8 and back face diagonal supports 7 next as seen in fig6 a 6 b and 6 c where fig6 b is a transition stage the rear legs 2 may be pulled downward such that the ends of the back face diagonal supports 7 that are.