Abuse it N lose it. Stuff like this is why we can't have nice things. It's all well and good that you want to promise you'll be a good boy with it but ad you said yourself, it can be found by fishing or bought by others, what's to stop them abusing it?
No. It was allowed, and others fucked it for you by abusing it. Sorry chief, you're outta luck. I'd thank the people responsible.