6m SSB
You'll find lots of activity on 6m in the late afternoons on 50.125 +/-, and 50.200 is a "local" hangout around Tulsa for 6m ops, but it's all sideband. Very little FM activity unless the band is really open.
6m tends to open (sporadic-E skip) between noon and about 6pm. Nighttime openings happen, but are rarer, so the number of people listening (to know if it IS open) goes down after dinnertime, but there's still some activity.
FM will only pick up if the opening is really good (unlikely after dark, especially) until TARC or the TU amateur club gets their 6m repeaters back on the air.
Jay