I am okay with hitting on girls the whole night and not closing every time, the flirting is fun enough.
Recently, I've been seeing if I can get girls to ask for my number because I'm so interesting/funny/fun or whatever. It's had pretty good results. though you didnt "take charge", youre still alpha by not being any sort of needy.
The only thing I change about my game is to be a little more mysterious or aloof. This obviously has drawbacks with some girls thinking you arent interested in them. others will work for your attention, and its an awesome feeling when the girl asks for your number out of the blue
PS: though this had some success, there were numerous girls that I did not close at all, though definitely could have if I took initiative. For those who care more about getting the number but wanna try this out, i'd recommend to refrain from asking for the number until the last minute, when you realize she isnt gonna ask for yours