Hi sweetie. I really like all of you questions! You know thaare are no silly questions, only silly answers.
As I'm a dom... I of course haven't worn rope in public. But I've often had my slaves do it. It's very easy to make a nice and tight "body" bondage that cannot be seen. But it's of course also possible to make it clear for all that she's tied. As I'm into public humiliation it's my favorite.
But it can be make "mental" bondage. Another of my favorites are the invisible handcuffs. As there isn't such a thing, or nobody just haven't found them yet. It's all in your mind, as you have to act and behave as your hands are cuffed together. If it's forgotten the result will of course be a very hot and sore butt.