64 similarly contains a rubberized surface 74 this rubberized surface 74 represents the female end and terminates in spaced relationship from the end 76 of the pole 64 in fact each pole is formed with a male and female end when the two pole sections 62 64 are connected the exposed flap 72 of pole 62 will overlie and can be pressed onto the female end 74 of the adjacent pole 64 this will cause the flap 72 to interlock with the corresponding v shaped edge 77 of the rubberized surface 74 along a joint line 78 in order to provide a suitable joint at the rubberized surface the joining edges are matingly beveled so that they will interfit with each other the grooves of the flap 72 will be pressed onto the exposed ribs at the end 77 of the adjacent end this will provide a smooth and planar rubber face even at the junctions to provide structural support at the junction a joint can be inserted interiorly of the poles as described in my u s pat no 4 382 488 in order to provide for a suitable interfitting of the mating edges of the rubberized surfaces the ends can be cut at a suitable angle the joint edge 78 is shown in an inverted v shaped cut this will permit suitable interfitting of the two edges to provide a smooth joint thereacross when flap 72 fits into the inverted v shaped.