I personally have never farmed bones with a beetle. I always got PKd too many times. I just gather enough to fill my pack then make a trip back to town. With the Spirit moongate so close to the champ, that is a better option IMO. Better to donate a couple of hundred bones to someone if it happens, rather than a whole beetle's load worth. I value my time too much, plus getting a res for a beetle can be a pain.
-Skylark