I am looking for ways to spot or attract duals that I meet daily. I usually like to hear people's conversations before approaching them, but I now am thinking about opening up more with strangers that I have no idea who they are, so that I can see their reaction, that is, giving detailed speeches so that my ego functions can be made clear, which may result in a greater receptiveness for my duals, and greater repulsion in case of more incompatible types (that wouldn't be able to digest my output).

So what do you guys have to say about it?
Secondly, do you have any tips for attracting them at first contact?

ps: I have learned to attract a certain type of people, but I have realized that this type makes a SuperEgo relation, and I am a bit disappointed after having spent almost 2 years in order to understand how they work.