Mitch...I would highly advise not doing the turning rack style..but you should actually hand rotate the eggs 180 degrees, 3 times a day, that will ensure a good hatch.
I often refer to red oak farms Emu site...they have been raising emu's for a long time....here is an excerpt from their hatching and raising page:
I am often asked by new farmers why their eggs didn't hatch. If the problem is not sterile eggs, it has to be the way the eggs are handled and/or incubated. The most important things in incubation are temperature, humidity, air flow and egg turning.
Most new farmers get the temperature and humidity right for their area of the country. It's usually a matter of following the incubator manufacturer's instructions. However, there are two other things that are equally important.
Air flow: As the eggs develop the embryos grow and use oxygen. Levels of carbon dioxide can easily build up if there is insufficient air flow. This is problem in the smaller cabinet type incubators. Know your incubator, talk to people who use the same type you use, talk to the manufacturer. The larger commercial style incubators usually have this problem addressed.
Turning: Many people start their incubation operation with a cabinet style incubator that rocks the eggs back and forth. They incorrectly think that this is all that is required to hatch a healthy chick. Wrong. The eggs need to be hand turned at least 3 times per day. When turning the eggs by hand the egg must not be rotated in just one direction every time, but back and forth. If you do not rotate the egg back and forth the embryo will stick to the shell membranes or the yolk sac will stick to the bottom of the egg, either way, you have chicks dead in the shell. We use a large incubator with rollers that turn the egg back and forth hourly.
Check the eggs daily for odor and temperature. When the eggs are within a week of hatching, I start tapping. You use a metal rod for this and tap the egg. If there is a tinny sound, you have a dead egg. To double check, take the egg out. A fertile egg will remain hot, a dead one will cool quickly.
Eggs should hatch between 50 to 54 days, depending on the temperature. Higher temperatures produce chicks quicker, but if the temperature gets too high, you have other problems.
We keep our incubator room at 68F, and incubate at 97.5F, with 30 % humidity. We keep the hatcher at 97F.
Hatching Chicks
When the chick has broken through to the air sac (sounded), the egg will sound hollow when tapped and the chick will cheep. (I whistle to mine) Compare the sound with that of a clean blown egg (one hole in one end).
The chick will have 72 hours worth of air, but once the chick has entered the air sac they usually hatch within 24 hours. When the chick makes a hole in the outer shell, it is called pipping. You can offer encouragement by tapping on the egg and talking to it. If the chick is mal-positioned it may need help to get out however, these chicks usually do not flourish and die before 3 months. Keep an accurate hatch log and indicate if you have assisted the hatch in order to make comparisons to any chick mortalities.
We move the egg to a hatcher when the chick has sounded the shell. We use old terry cloth towels that have been cut into the right size for the hatcher boxes to keep the chick from slipping. We also tape the legs for the first couple of days to be sure the legs don't become splayed.