My only eel experience has to do with sushi and what I THOUGHT was breaded chicken. It wasn't breaded chicken.
As far as your tire-track, maybe some netting? Something with 1/8 or 1/16'' holes. Kind of like a hair net or something. And as you know, a good lid. You wouldn't happen to have any pictures handy would you?
I had something good to say, but I forget now