A golf training aid 100 has a sensor mat 105 placed under a golf mat 200. The sensor mat 105 has pressure-sensitive impact sensors 210 disposed in first, second and third regions. It includes an electronic circuit which activates a first indicator green upon an ideal impact detected by impact of a golf club head on pressure-sensitive impact sensors 210 in the first region, a second indicator yellow upon a thin impact, or the third indicator red upon a fat shot impact detected by the impact sensors 210. The golf training aid 100 also includes a wearable module 700 attached to the golfer's waist. It includes an accelerometer which measures rotational motion of the wearable device 700 and wirelessly transmits a signal to a base module 600 which activates an indicator to show under-rotation, proper rotation and over-rotation of the golfer's hips at impact of the golf ball 305.