An installation method and tool facilitate the installation of decking members onto an elongated fastening track in an integrated fastening track systems. The installation tool comprises a base having a distal portion and a proximal portion. Imparting a striking force to the rear face of the base distal portion urges the front surface of the base proximal portion laterally into contact with fastening tangs integral with and extending upwardly from the fastening track, thereby engaging the fastening tangs to secure a decking member with longitudinal side edge slots to the fastening track.