The trick to bunker shots is to get the correct set up, you need a wide stance because it is a big swing, open stance, weight and ball even or slightly forward and go through with your body not your hands
Drivable par fours are the best holes in golf but you must weigh the risks of driving versus the rewards if you play it well
Avoid taking a penalty stroke and learn to improvise by finding a way to turn the clubface in the direction you want the ball to go and figuring out a way to swing the club on that line