248 and 250 as shown in fig1 the lower tip of the stake rests on portion 250 during shipping as shown in fig1 the retainers 242 exert a downward pressure as seen in fig1 on the stake 222 supports 246 exert an upward pressure on the stake in addition portions 248 and 250 provide support for the top of the stake so it cannot move longitudinally in channel 240 the combination of these forces enable the stakes to be frictionally held in their storage positions in channels 240 as will be appreciated by those skilled in the art from a study of the figures and the above description the base members 200 300 400 and 500 are formed primarily from molded components in a present form the base members 200 300 400 and 500 are formed primarily from high density polyethylene hdpe using an injection molding process those skilled in the art will recognize that there are various other materials that can be used to form the base members 200 300 400 and 500 components and various other processes by which the components can be made which other materials and process are within the scope of the present invention all patents and publications mentioned in this specification are indicative of the levels of those skilled.