It's generally agreed that you don't qualify a girl (for example, 'what do you have going for you other than your looks?') unless she is attracted. Otherwise, she will simply not qualify herself to you (she might say 'nothing. I'm just pretty. Now go away')

However, Todd V says we need to disqualify (and maybe even neg) soon after the open

However, isn't that a bit of a contradiction? If you disqualify a girl who isn't into you as you open, wouldn't she reject these techniques in the same way an unattracted girl rejects you trying to qualifying her and just basically agree and walk away?

I can imagine negging and stuff working if some hot looking dude done it after opening a girl, but I think it's a bad idea if she isn't likely to be attracted to you