I have had trouble with a few cars in the past, but I have a routine that ALWAYS works for me know.

First, I ALWAYS spray it with PB Blaster before even trying. Then take a hammer and hit the bolt a few times to get some harmonics through it and it will lossen up a little. Then I have someone sit in the car slam the brakes and put it in 5th gear. Also, make sure the car is on the ground and the wheel is touching the ground, becasue the wheel might try and turn. THen get a breaker bar (a strong one, not a whimpy little walmart special) and make sure you use an impact socket on it, not a regular one. Regular ones will break in no time. Use a little force and it will come off. I have also used my Air Impact gun sometimes too.

I have done the crank pulley bolt on probably 20-25 cars by now and haven't been able to not get it off. It may take a little more time, but I have never spent more than about 30 mins trying to get it off.

BTW, I never stick a screw driver in the flywheel........

Just my 2 cents.