I think a lot of dating single mothers is about how you convey yourself. And I think that goes for all women, too.
I've always been against the idea of using money, a good job, a nice house, and overall financial stability as a way to impress women. Good for you if you have those things, but if you make them the basis for getting women, eventually those women are going to want what you have. It's only reasonable if you're bragging about what a great provider you would be, that eventually she will start asking you to provide for her, or for her kids. Any woman will turn into a gold-digger if you keep waving your gold in her face.
I am up front with all plates that I am not relationship material. I'm not one of those guys. Sex and a night's worth of companionship are all that I am offering. And most single moms are fine with that. They all have jobs and take pride in being able to support their kid by themselves. Between work and parenting, they don't really have time for dating and courtship, so we just skip straight to the sex.