About Located at the renowned JW Marriott Tucson Starr Pass Resort, True Spec Tucson is home to one of our state-of-the art mobile fitting units and utilizes Foresight GCQuad launch monitor technology. True Spec Tucson also features our signature brand-agnostic fitting matrix of over 50,000 clubhead and shaft combinations which helps our master fitters find the best equipment to improve your golf game.