I for one tried to do this and left the text somewhere inside a book and used it as my bookmark for sometime. It works, it's secure, and no one will ever get interested on it due to its nonsensical phrases and purely unconnected sentences.
That's a nice trick. Did that a few times myself but there's still a risk that you can forget you ever do it if you got a stroke or whatever. I think it's nearly impossible to completely eliminate this risk, so making multiple secure backups (and the way you encode it) is always needed.
Btw stop doing multiple posts in a row, it broke forum rules.