I just pulled my crankshaft pulley last night, and my cousin who was helping me suggested this method. I avoided it as long as possible and tried every other method available, but that bolt was not coming off. So we did it. Like others have said, just tap the starter for a split second and your done - the bolt is loose! It's definitely nerve wracking the first time, but after seeing how easily this worked I wouldn't hesitate to do it again. We also braced the breaker bar against the underside of the passenger frame rail.