I hate hand turning as well. I marked mine yesterday of ones I thought may be clear but wasn't 100% yet, ones that were a ? Yolks looked darker but no development and 2 that looked like they quit as it was just a single red line..... I did remove 1 that was for sure a clear and the yolk was glowing yellow. I will check again probably tomorrow on day 6 and see if any changes and maybe get to none stacked. But I do have almost a full incubator of ones developing.Still hand-turning my overstuffed incubator. Might or might not candle tonight -- though I wouldn't pull any eggs yet because even with the Ovascope I lack confidence in detecting issues.
Which, it occurs to me, makes a good case for candling tonight if I have time. Because then I could implement my policy of not pulling eggs that haven't failed two successive candlings a little sooner by also candling on Sunday and pulling clears and early quitters then.
I do get tired of hand-turning, but need evidence that my fertility levels have improved before not stacking.