Tattoo,
As I remember,,,it's a little fuzzy
It was in the 60s or early 70s my uncle down the cape would fill a girls panty hose with cat food and drive a metal pole tru it on in one of the many rivers on the cape during a low tide. He would then return the next low tide to find a few eels stuck somehow to the pantyhose... As I recall it worked

I think it also would work around a jetty