Lol I used to be regular at the KTV scene mate. If the girl likes a customer usually auto ask for ur number and will call u out. If not then forget it. I cant call girls anymore cuz my gf used to work there so as long as I rock up, her frens can recognise me. Before I call girls usually 3-4 hrs max and in a room of 4 ppl. As long as the girl no connection with me I will cut and ask her to leave. This is usually hit and miss lah.
So far on my hit list already sup 2 Taiwanese and a Jap. Sometimes must play the game a bit different one. Dress a bit smarter, smell nice...girls dig that. Oh and dun fuking eat garlicy meals before u go there cuz I hear so many stories of customers with bad breathe...she wouldn't even want to come close to u. Play good boy first then really naughty later on. Trick is if u can make the girl laugh often, most likely can makan already. But remember, it is easier for the girl to head to ur place after a date nite and NOT after working at the KTV. Ppl have eyes and they will talk amongst themselves on who slept with which customer. Put urself in their shoes, you wouldn't want a bad name going about ur workplace right. Vice versa goes for each customer, play with too many girls then they will know who u are. They do talk in the waiting room u know. Look at it in a clubbing context, use the skills in the club in the KTV room lah.
This scene is like fishing and u need to know when to cut ur losses.
But please also remember, what works for me does not necessarily work on someone else.