If the Prusk is slipping:
With so many small diameter ropes out there, the kleimheist can make the difference between getting the thing out, or being really frustrated. Use barr-tacked webbing loops from which you'll tie a kleimheist. The webbing smay have a better bite on smaller lines than accessory cord, or spectra. This link is a great step-by-step: http://www.iland.net/~jbritton/kleimheist.htm A munter-type hitch is made by wrapping the cord around both a locking biner and the rope. Also, not too repreat myself too much, but a kleimhiest is a great alternative (cheap, and safe) to a mechanical camming device. And, most importantly, drape something on the line to keep it from snapping all the way back to the operators...