How do you effectively use a girl who wants to help you get girls to do so? I know it raises your value, but is there anything else she can offer besides that?

A wingwoman is the best asset to a pickup artist. A woman can tell you more about another female's body language, etc than any mPUA. A wingwoman can provide perspective that is always meant to help you. That's assuming, of course, that you are bringing a female who won't just criticize every girl you hit on and call her a slut. If you have a mature woman with you, then, she'll let you know when you're being too meek or too agressive. She can chat up her friends way better than a wingman. When your bro talks to her friends, its usually just a case of you each hitting on one, with the wingwoman its "girl talk." Assuming she's straight, there's no risk of you each wanting the same target and arguing about it or losing your set by AMOGing eachother.

Furthermore, the status is a lot more than you're making it sound. One of my best friends has had a girlfriend for the last 5 years, but women throw themselves at him even after he says that. They assume he has something great going for him. If you have female friends, that's even better than showing off fuck buddies. It proves that you can hold a conversation with a woman and are fun to be around without having to actually say or do anything. All that DHV crap, the facade that MM promotes, is unnecessary.

And on a personal level, it's just as important to be able to make female friends as dates. if you are incapable of having a female as a friend without there being some sexual component...well you're gonna miss out.