Dave here is what's working for me. Maybe it will give you some ideas.

Here is the pulley full up


Here is the pulley to the rafter


Pulley to frame is rope looped at one end and tied to U bolts and connected to frame corners for easy of connect/disconnect.


Then I just tie it off to the wall, this is what I'm using for now.


Hope this Helps you some and Merry Christmas
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Here fish, fish, fish,