In the mid 2000s our cluster didn't really do a whole lot outside of the Classic Rock station. Our Hot AC and Country stations didn't do anything different with the local hours, although like David suggested, we did have one extra song an hour on both formats that made for two golds an hour. And since the one scheduled gold on weekdays was also the drop for time song, even some of the golds that got scheduled a fair amount didn't always get played, but they did on weekends.
The Classic Rock would do the standard double shot and/or block party weekends, as well as an occasional weekend featuring one or two live tracks an hour. We also did a local Saturday night "Big Hair Saturday Night" from 9p-12a, but the harder music would start to play a few times an hour in the 6p hour on Saturday.
We also had AT20 with Casey Kasem, Backtrax USA, Bob Kingsley, another classic country show, and Flashback on Sundays. The country station also had a true request show on Saturday nights (that I got to host for a couple years!) that allowed for I believe half the hour to go to requests, and in a small rural market we typically skewed quite old on most of those requests - which were honored as long as we had them!