A ring toss game including a pair of first and second turf embedded pegs arranged at a predetermined spaced apart distance. The implant can provide support in fusion situations. The sleep area provides the softness and other salutary effects of a foam sleeping surface while the stiffer spring perimeter element provides the rigidity need for comfortable seating and wear resistance. Each of these systems has an input terminal to which a signal to be amplified is supplied, an output terminal, a bias terminal, a plurality of amplifying stages which are sequentially cascaded between the input and output terminals, and a bias circuit connected to the bias terminal and each of the amplifying stages to apply a bias potential to the amplifying stage. Based on the observations by the link monitor unit, the distribution unit changes the selection to an alternative physical link that has a larger amount of stored data than the currently selected physical link. The systems further may include: a bidirectional feed path extending from the feed path; a supply system that moves materials to the feed path; a bidirectional drive system that moves materials along the bidirectional feed path; andor a bidirectional feed path access control system.