Konada,
I agree with you in theory, I just personally DO NOT put this much effort into lukewarm chicks because ultimately, it's just not worth it.
I have enough chicks that are clearly interested in my approach, personality, and looks out of the box, that I don't have to do some technical tactics in order to push a lukewarm check off the fence. When it has to come down to that, it's just not FUN anymore for me and if I'm not having FUN with this shyt, it's just not worth it.
So I always say fvck lukewarm chicks. I am who I am, either you are going to ride with me or not.
Think about it, as a guy you ought to have a life outside of women anyway and women ought not be your main priority. So if you have 3 solid interested plates you are spinning, why do you care about "winning over" some lukewarm chicks? You should barely have enough time for the solidly interested plates that you have.
Example, the OP gets a 15% response rate on cold approach numbers. So if he collects 20 numbers let's say, that's 3 solidly interested chicks. Managing those 3 solidly interested chicks should take up ENOUGH of his time considering that he has other shyt in life to do.
So I say fvck the other 85% that flaked out.