Crank Bolt - A4

[Bhatti, Mohammed]

Folks,
 
Gotta a question.  Finally got around to doing my t-belt and water pump on my A4 1.8tq.  I have taken the nose of the car off, took off all the belts and removed the water pump.  A friend suggested changing the crank and camshaft seals as well.  Question is, how do I loosen the crank bolt to get at the seal.  He suggested the old "jamming the screwdriver in the flywheel" trick.  This sounds to risky to me.
 
Any other ideas?  Can I rent a crank locking tool from Zelenda or any other source?
 
Thanks
 
mohammed
97 A4 1.8tq