Hi, I'm new here, but have been keeping & breeding snakes 20+ years. I've never brumated my corns, & have had some good results in corn breeding.
I found my females to be most amenable to breeding immediately after shedding. They actually have hormonal cycles throughout the month (or time between sheds). Their next peak comes about 4 days after shedding, then about a week after that. I don't have the exact timetable any more, but could probably find it again.
I never had a separate bin for breeding. I learned, after one try, never put the male in the female's habitat. If she's not ready, she panics & does her best to escape, taking some time to calm down. So, I always let she visit he.
First thing she always seems to do is look for a water bowl and have a long drink, while the male notices she's there. If she's not ready, her response will be to look for a quick way out, so I'm ready to remove her immediately & place her back into her own enclosure.
If the female is ready to breed, her response will be to allow the male to stroke her back with his chin. While they do move in jerky stops & starts, that behavior isn't limited to a breeding response. But, as he slowly works his way up her back, she will remain still & raise her tail in the air.
The actual time of the act varies, but once the pair has finished, the male will many times coil up beside his mate, occasionally stroking her back with his chin. I'd then remove the female to her own enclosure.
One of my males, a beautiful brown anerythristic, was a champion breeder. He was so sure of himself, he'd refuse to breed the same female again. I could introduce another female, he'd mate with her once, then turn her down as well. He fathered 4 large healthy clutches of eggs in one day!
One year I'd decided to give one of the moms a year off from breeding (one of my older ones). It was a complete surprise when she laid a clutch of 17 healthy eggs anyway!
I'm sorry if this was too long or contains extraneous information. I tend to get excited about snake breeding.