When do you ask for a second date?

I'm curious to hear what is typical of asking for a second date (I guess this would apply more for guys). I've done it to where I'd ask at the end of the date, texted, and just asked next time I saw them. Im wondering when is the best time to ask? What do you do?

At the end of the date
Texting sometime after the date
Asking in person at another time you see them
Other (specify)
Select gender and age to cast your vote:
When do you ask for a second date?
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