For many, this is the most interesting and fun part of the SWR course. Unfortunately, it can also be the most dangerous. For the most part, mechanical advantage techniques are used to unpin boats or rafts - not people. This is a good thing since you can and should take time to plan your strategy. Always remember the KISS approach and attempt the least complex methods like direct tugging first. On many boating runs, you can get assistance from boaters in other parties for the Armstrong (10 Boy Scouts) method. True mechanical advantage systems like the Z Drag or Pig Rig should wait until the other, less complicated approaches have been exhausted and you simply lack adequate manpower.