I haven't used either of those systems. I have heard of issues from people using the pynch pulley where they said there was too much friction involved while lifting. Again, not personal experience, just what I have heard from two people that used it. The Pack a Pull in a 4:1 ratio looks like it would work fine. Eastern Woods Outdoors sells a MTS Run & Gun Ultralight Hoist. It uses dyneema as well. It works great for deer, even large ones. I doubt you could lift an entire elk since it does not reduce the weight enough. Maybe if you tie it to a truck!! However, hanging quarters or even a couple/few at a time on one line would be no problem. You can purchase the items as a kit, or build a kit yourself from various online vendors. There are a couple videos online that show how to use it. Let us know if you pick up the pack a pull system... always looking for something new to try!