Hey,
Now I know a lot of you guys will probably slate this approach and I am not saying depend on it but it is a great little tool.
I have just recently got into this pick up stuff properly after about year of sitting on the fence reading books. Ages ago when I was watching a TV show I saw somebody demonstrate how pretty much anybody will take an object your are offering them if you pass it straight to their body, around where the solarplexus is.
Over the last few weeks I have been pushing myself out there to just approach, whenever I could. One approach that seems to have worked wonders is when I am heading over to the bar or the bathroom and I stop with an innocuous opener like "hey, whats your name" and then after around 30 seconds of light banter (if that) I will pass my phone into them (very assumptive) and say "listen my friends are just leaving but let me grab your number". In a lot of cases they just grab it and start typing
Then it moves onto text game. Which I am very hot and cold with.