AFter enough repetition in the same situation, you *can* use your previous experiences as a databank to access when you need to strategize..kinda like a roleplay. However, it is never as good as the genuinly triggered deal. The best enfp 'strategy' is the combo of both, where you get triggered and you suddenly recognize the situation as something you'v edone before, and use that info to enhance your reaction to increase impact, based on previous data.
In any event, it is better to 'trigger yourself', even in the first situation, than actually fake the entire situation coz that just goes horribly wrong. We're made to 'wing it' or it just wont' feel right, authentic or be succesful. It won't sync up.