A golf club head has structure for assisting a golfer, and a head cover has structure for supporting the golfer-assisting structure. In one aspect, the golfer-assisting structure provides a visual indicator, such as an alignment marker, a ball impact indicator, a temperature indicator, or the like. In another aspect, the golfer-assisting structure includes sensor(s) and/or other electronic components for measuring swing characteristics, course conditions, global position, or the like. The supporting structure may provide a source of energy, such as a power source, a light source, or a heat source. In some aspects, the supporting structure may include a processor for receiving data from the golfer-assisting structure, and may transmit data to a display on the head cover and/or to an external source.