10 is pivoted 180 degrees from one side 18 facing groundward to the other side 16 contacting the ground the platform 10 can be principally made of any of a variety of rigid materials including various metals woods plastics and rubbers in any case the opposing platform faces 16 18 have dramatically different surface topographies that are configured to reversibly engage different types of ground surfaces the platform faces 16 18 may even be fabricated of different materials for example in one embodiment the platform 10 is fabricated of a high density polyethylene composition and is molded to have a first surface 16 with a series of ground spike protrusions along it that are efficacious for engaging and penetrating a grass dirt or mulch ground surface then adhesively bonded to the platform 39 s other surface 18 is a soft rubber corrugated mat 22 that is efficacious for frictionally engaging a wood or tile floor for example in a preferred embodiment each rail receptacle 20 has a rectangular tubular upper portion that forms a frictional cap like fit over the ends of a typical ladder rail 104 and it has a solid lower portion with a bore 26 through which the pivot.