I have been experimenting with this a bit.
I built a separate room, much like a large incubator for several Ball Pythons ranging from hatchling up to adult female. The "room" is set to be 89 during the day and 85 at night. It's dark in the 24/7, so I think the night temp drops help to achieve a natural day/night cycle.
They eat consistantly, shed properly and pass waste normally.
I have not bred them in this environment just yet, but when the time comes I planned to increase the humidity in the afternoons when I get home from work. Really pump it up for an hour or so, then let it drop back down to normal. And thats it. No temp changes. I noticed that in the tropics, it rains in the winter months in the afternoons a lot.
Not sure if this will work, but I'm going to try.
What methods have you heard of for breeding without hot spots? Perhaps thre is already a tried and tested method I can adopt without trying to reinvent the wheel!