I'm married, but we are in receipt of tax credits and housing benefit, and have found being a cm has been good, in regards to this. The council ask to see my accounts every 6 months and work out an average wage based on that, so our housing payments will go up or down depending on the previous six months.
so in theory, if I lose work, I do not lose out too much financially.
It is unreliable - especially at the moment, I know many cms who are losing mindees, as the parents lose work.
However, it can work both ways. You can have very busy,profitable times which make up for the slower times. I think the longer you are doing it, the more word of mouth you build up. Lots of my current mindees have come about due to reccommendations from others. Of course this is impossible when you are new, and when I first started out I found I was often over looked for work for more experienced cms.
You just have to hang in there, i am now busier than ever. I would also say, don't always turn down the part-time work, the 'bits and bobs' they are sometimes called. You never know what they can turn into and you don't know how long you will have to wait for full-timers to come along. I had a two hour a week job that has now increased to five hours a week, and a four hour job that is now thirteen hours. If I had turned down those two jobs initially I would have lost 18 hours !
You have to make sure you get the balance right. Take on too much work that doesn't suit your dc, and your home-life will suffer, and stress will quickly creep in. I made the decision long ago not to take on any kids older than mine. You also get a gut feeling as to what parents and kids will suit you and your family. My dc are quite gentle laidback types, and so are the mindees I have, it has just worked out this way, so they all get on really well.