Shark tickler self-unscrew solution?

Hundreds of our shark ticklers are now being used by marine biologists to test a hypothesized technique to reduce shark bycatch on long-line fishing vessels (the main cause of precipitous shark population declines).
The ticklers are providing very exciting data, but one weird thing has been happening. A small but non-negligible number of ticklers are becoming unscrewed while deployed (destroying them).
We might have a solution. This is an instructional video, presented by Tori Hartl for our collaborators on how to use this simple fix.
( Note to any biology faculty out there: Tori is a rising senior biology major interested in graduate studies in marine biology. Reach out to me if you are looking for an excellent grad student candidate! )
Questions welcome!