Abstract: Apparatus, ancillary structures and equipment are disclosed particularly adapted to the sport of trampoline boarding (trampboarding). The trampboarding apparatus includes a frame adapted to define plural planar fields intersecting at obtuse angles, a flexible material mounted therein and supported and located thereat to retain definition of the obtuse angles as defined by the frame at the flexible material when mounted at the frame and during use of the apparatus. The ancillary structures and equipment, when combined with the apparatus, provide a trampboarding arena for performances and competitions. A fully rotatable foot mountable sporting board is also disclosed.