A system for inhibiting a wheeled, personal mobility unit, such as skateboards and in-line skates, from sliding along a surface having two or more surface portions oriented at mutually different angles has at least one part having a contact surface that generally complements the two or more surface portions of the surface. The part also has a body extending from the contact surface and terminating at an exposed surface. The part may have hinges to enable the part to bend and conform to complement the surface. The part may have three dimensional features extending from the contact surface for increased adhesive contact area relative to a flat contact surface. The contact surface of the part may be attached by adhesion or other methods to the surface.