Most Helpful Girl
This isn't the movies. You can't hide a kid for the first few dates, win a woman over, introduce her to your daughter, and expect her to fall in love with her.
If you try that scenario in the real world she'd most likely be upset that you were hiding something so huge from her. In a way it's lying to her, and if she doesn't want to date a single father then you tried to trap her.
Put it on your profile. If a woman passes you by because of your daughter it wouldn't have worked out anyway. Women who are willing or even looking to date a single father are more likely to be drawn to you.