Hey man, congratulations first of all, the best thing you can have is no fear about trying again! You saif u got blown out a few times yet you kept approaching and you closed to some extent, that itself leads me to believe you will progress fine!
I think to keep the attention more should aim at getting them interested in you! I.e neg them, play cocky funny and create an emotional connection/meaning - i think it is to easy to get caught up just asking them questions and talking shit!
As for the Wing man thing im not sure, i am yet to have the pleasure of a wingman!
Although i would have had no problem with the mother/daughter thing, it may work in your favour because you wouldnt have seemed that bothered about them coming up and it shows there is still more they havnt got from you!
I am sitting in the libary right now, im about to go toilet then approach a girl i can see on her own! my opener... my friend (female) has been going out with someone just a month anf he wants to take her away for two weeks, do u think she should go? What if she realizes she doesnt like him etc.....!
What do you think? Hopefully i dont pussy out and i actually go through with it, i will let u know how it goes man
Hope this helped, keep up the good work bro!