another good way to feel the turn is to hold a club at each end, the butt of the club pointing to your target. Hold the grip end overhand, and the head end underhand.
Now swing the club and shoulders 'together' , thinking of the butt end of the club as a battering ram inclined on a wheel. Keep the butt of the club pointed to the targetline. Feel the legs/body supplying the movement. When you get it moving, let go with the right hand and let the left roll over. Do the same thing with your hands just split on the top and bottom of the grip, and also not letting go on the throughswing. You will feel how the turn is the 'release' in your forearms, and your 'hands' stay passive and react to the forearms.
Also, the standard split grip drill is one of the best. You will start to understand why hockey players make good golfers