I'm far from experienced, but when I helped my chicks hatch, it had been over 24 hours. In my mind, if they have a pip hole and you can see their beak, hear peeps etc and they are making no progress, there has to be a reason, in my case they were totally shrinkwrapped.
Ah who cares? There will always be naysayers. I for one think it is interesting and at least they have a chance to make it so really what's to lose. They either don't get incubated or get incubated and have a shot, especially if you will be helping them. JMO