It's always better to be in control and friendly. What is called 'day game' is really nothing more than starting up conversations with strangers with what is going on around you. Be observant, know body language, understand that MOST women are not going to be receptive. Never try and pick up a woman going about your day. If she is open and receptive to talking to you, then excuse yourself, get her number... then you get to find out if you got a bum number or she is going to screen your calls, or make excuses as to why she can't meet up, or if she is going to cancel on you.
This is pretty much all I do now... I'm too old for 'clubbing' besides I'm really not into night life anymore. Most women I hit on (since I'm in my mid-50s are women that look like they are Gen-Xers or Gen-Y, so what works for me will likely NOT work for you younger dudes with younger chicks, so take my advice with a grain of salt. Younger women seem to be more comfortable with using social media as a way to meet men.