Currently using the heating element from the modified hovabator I used for last year's clutch, with a herpstat1 basic for control. Temps inside were stable between 89.5-90°. Computer fan for air circulation to keep the temps even top to bottom. And no I didnt take separate egg temps this year, mostly because they were always within a half degree inside the egg tubs last year. I did have to move the whole setup about ten miles. The egg tubs were packed into a foam cooler, it was in the 80s that day, and they were only out of the incubator for less than 2 hours. And yes they were kept level the whole time. The eggs tubs were I believe Rubbermaid 2qt storage containers ( think Tupperware style, not throw away) with hatchrite for the media. Even though they never saw any temps lower than 85 during the move, which I got from the thermometer I had in the transport cooler with them, I'm staring to suspect that the move didn't help any, since the first clutch to hatch would have been fine were it not for my mistake, and the trouble has been with the rest of the clutches that got moved.
As for my snakes, they are in assorted racks, 90° hotspots and 80° cool end. Room is pretty much kept at 50% humidity, and I haven't tried doing any cooling period yet.