Hit Man X, I kind of feel the same way about jamming something in the flywheel. I guess besides the expense of the tool, though not much, plus the shipping, you'd have to wait 3 or 4 days to get it. If you needed to get it done you may not want the down time. Also, your in there for a reason, probably a reason that's already costing you a bit. Between using the starter and blocking the flywheel, it's just about a coin toss comfort-wise for me.
I really admire the ingenuity of the starter trick though! I think guys who are inclined to work on cars just have a bizarre compulsion to try crap like that

Optimusprime, I'm pretty sure Ps2cho would know about that. He's had the timing covers and bearing bracket off these engines many times. I'm guessing he has two or three timing cover O-rings laying around in his toolbox.
Thanks for mentioning it for readers who may not know!