When you mentioned fish hooks, I got a flash back to a time when I almost got it. The line was set about neck height and had hooks about 10 inches apart on it. I was bending down because I thought I saw a ground wire and the hook snaged my hat. Upon checking it out, some of the hooks had a green paste on them that we thought might be some kinda poison.
In later years when I had some problems with young prowlers at night, I set a fishline with tin cans hooked together on it. It woke me up on the second night as I lay in bed. The profanity that I heard as they took off, made me laugh out loud. They never came back.
The Hermit