He's got a pretty small spawn area. Just set up your chat filters intelligently, afk in his room, and occasionally check the chatlog to see when someone killed him. Remember those little conquest update things happen once an hour, so you can get a ballpark idea that way.
ooh a tod would be most helpful. that idea with the update could indeed be good. might have to try it sometime. (mnk is lvl 37 <_< almost brown belt time)