I designed these to solve grip problems for hand dexterity and nerve damage. It allows a person with limited feeling or dexterity to pull chords/ties. Designed for tightening a transparent cover for a gazebo, it should be usable in any cover/tent scenario. It provides maximum leverage with minimal dexterity (a unbent finger essentially). Also included is the complementary hook for mounting on posts, etc allowing for easier tie down and release.
Tested using Hyper PETG and PLA.
Added a second stronger hook design.,
The author marked this model as their own original creation.