I batoned with two batons on each side one time when I hit a knot with my rd9.
it actually worked really well.

and I use some pretty big batons myself.
<img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />

the tree was about 5-6 inches in diameter, almost like the one you batoned.
I hadn't done really any serious prying until now, it really is awesome when you see the crack down the log just open up and hear all the cracking.
*sigh*
it's so satisfying.
<img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />