he has no hair, i don't think he's hit puberty

For what it's worth, I use my ~$15 ebay'd micropulleys (xinda brand) to make this type of z-rig 3:1 when trying to yank trees, you should check it out it's one thing to get the concept but another to feel that level of power coming from you tugging on a rope, heck last time I did this I anchored off a trunk that was already felled and I ended up with a 5:1 setup (anchored from the felled trunk) and it actually got the trunk on the ground to move because of the force I was applying (well, 5x the force, but still it *feels* like it's from you which is very very neat :D )

Appreciate you have put effort into making this video. But there are some issues with it: 1. You have not explained the exact scenario, the environment, the state of the person being rescued, and the task you are trying to achieve. This means viewers could be confused as to when and where to use your system. 2. Pieces of needed equipment are missing, you talk about them but they are not there. 3. You have a prusik knot that is so close to the load that it is pointless having it there, and it just makes a weak point in the system. There are better options. I will not explain details because my explanation would be (by words without pictures) ambiguous. 4. It is hard to tell, but it looks like you are using miniature toy karabiners not real climber load rated karabiners. 5. You have not explained how you will safely hold and secure the load between pull cycles. 6. You have not explained how you will secure yourself. 7. You have not explained how you are attached or not attached into the system. 8. You have not explained how the system is secured and with how many points of contact. If you are reading this comment and learning about z pulley systems, I would suggest getting information from sites that are part of recognised climbing institutions, rather than individuals.