My regular everyman schedule is 4am to 7am core, then three naps with no exact schedule, just mostly when I feel like I need them. When I jump to uberman, I do my naps at 4, 8, 12, am and pm.
When I start an uberman day, I wake up at 7 like normal, but then at noon I take my first nap, and just go from there. If I only take everyman naps through the day, and try to just do uberman at night, it doesn't work very well. I've found that I need the naps every 4 hours during the day if I'm going to be alert all night.
-Ken