sectional geometry of holes 6 is preferably uniform and circular but square hexagonal or other cross sectional geometries can be equally employed holes 6 are typically in the range of about 0 5 and about 2 0 inches in diameter holes 6 are preferably placed on opposed sides of coupling 3 in order to provide maximum stability an anchor shaft 2 is driven down through each hole 6 until anchor shaft 2 protrudes from the bottom surface of base 4 and into the ground below as shown in fig3 all anchor shafts 2 are identical and may be made from wood metal plastic or other material of suitable strength the overall geometry of anchor shaft 2 is preferably that of an elongated cylinder with uniform cross section down the longitudinal axis anchor shaft 2 preferably has the same cross sectional geometry as hole 6 although dissimilar cross sectional geometry can also be used the preferred cross sectional geometry of anchor shaft 2 is circular but square hexagonal or other cross sectional geometries can be equally employed more critical is the fact that the cross sectional diameter of anchor shaft 2 must be less than the cross sectional diameter of hole 6 in the preferred embodiment the cross sectional diameter of anchor.