http://ddowiki.com/page/Sneak_attack
The easiest way to get SA on a wolf build IMO is Deception gear; with your high atk rate you should see plenty of procs. Or you could use a weapon with blinding effects such as Celestia; again, high atk rate means high proc rate, even with the low 18-20 crit range on wolf builds. Or if you go the rgr 6 route like so many wolf builds, Dance of Death + Exposing Strike combo is your best friend.
If you really want to go heavy on sneak atks, consider rog 12 / rgr 6 / druid 2 like
this build. Basically you replace the crit dmg from winter wolf form with tons of SA: 6d6 from rog lvls, 3d6 from ISA epic feat, up to 9d6 from Enhancements (presuming SDK), though probably there's not enough APs to max those out. 36 Tempest (DoD + Thousand Cuts) / 24 Assassin (Lethality + max Killer) / 11 DWS (Exposing Strike) / 3 Acro (Fast Movement which applies in wolf form IIRC), leaving 6 APs to tweak things.