"I think I'm going to try to seek out the programs women don't usually rotate and work my butt off." - Ladybone
Just a comment on this. On the one hand, rotating at a place that has more women residents demonstrates that they are open to having females. However, they might have a reputation of being "women friendly" and will have more female candidates. Though times are changing, it's unlikely there would be an all female class i.e. there might be a limit to the number of females they ultimately take, meaning a more competitive spot.
On the other hand, there are programs that have no females that are trying to add females to the residency, which would fit in well with your plan. My friend (female) who interviewed at a midwest program had a story that would likely be common in a place that doesn't have females in the program. She went to the social, was standing around with a group of male applicants, and the chief came up and introduced himself to everyone in the group but her (expecting her to be one of the significant others). She finally introduced herself, and once he knew she was an applicant, wasn't really treated any differently. Point is, these places might be open to the idea of having females, but may not be used to it. This can be from residents, attendings and maybe just as importantly, ancillary staff.
Nothing wrong with being a trailblazer, but if you're at a place where the people you work with are used to having a female resident, you might feel like you're treated a little more equally on a day to day basis.