Through networks, you already have a natural screening process. However, if there simply isn't a suitable girl among your friends and friends of friends, then I recommend internet dating.
Yes, yes, everybody is quick to insult internet dating, and "Get out there in real life, man!" is always the cooler thing to say. However, a lot of people would tell you that listening to dating advice on a site like this is equally worthless. Is it?
People who fail at internet dating do so because they don't know how to use it. You need a picture, of course; what idiot wouldn't use one? You need to write down who you are and what you are looking for, and if you can actually manage to show a sense of humor in your description, then you're ahead of many. Then, you look seriously for a suitable girl. You don't think of it as if it's a movie where a stripper falls into your lap.
Yes, you have to write to a lot of girls, to feel their pulse. You'll still be able to contact more women this way in one hour, than during a whole night spent at the pub.
You can weed out most girls through the internet, and the rest you'll just have to meet for a quick cup of coffee, to see what they are like. A few of these you'll go on to meeting a second time. This process doesn't take any longer than any other process, and is a great complement to chasing girls at your friend's parties.
We are busy people, most of us see the same people every day. The internet makes sure you can see people you'd never meet otherwise. Use it, wisely, and it works.
Here are my personal statistics, from doing internet dating a couple of years ago:
For every five girls I sent a message to, I got one reply
For every four or five replies, I would go on to meet one girl
For every three dates, I would see one girl more than that first date
Here in Sweden, more people meet a partner through the internet than through the pub, so it's a big thing. People have realized that it's an efficient tool.