Incubators are fun, aren't they?
Turning the eggs by hand a couple of times a day is all that's necessary. We've only lost eggs through not turning when we tried to use an automatic turner which didn't work as well as it was supposed to and we failed to notice for a few days. We gave up on it and went back to turning everything by hand. Ultimately we'll be using broody hens for hatching stuff, but until you have the right sort of broody-blood-lines, you have to improvise.
You don't have to put the eggs in while they are still warm, you know. A hen will normally lay an egg a day until she has a full batch, and *then* she'll start sitting on the whole lot of them. That way they'll all hatch at roughly the same time.
We have a friend in the UK at the moment who is going to bring back a whole load of fertile eggs for us to try to hatch, so the next few weeks are going to be exciting. We've ordered silkies, cream legbars, light sussex and silver sebrights and my friend is getting some different sorts as well, so we'll have all four incubators on the go. The hatch rate is usually pretty low after all that traveling, but it's still exciting waiting to see what will make it.