Pre spawn whites

I know most of you don't mess with white bass, but I'm looking for another species to try along with Patoka LM fishing. The whites start their spring run around 50 deg.F. Questions - do they only spawn way up the Patoka River, say past Knights Bridge, or do they also hit the Little Patoka and other smaller tributaries along the way. Also, do they school up along the way and hold outside spawning areas until the temp.gets warm enough? Any help will be repaid somehow and sometime along the way. Thanks. And don't sweat this cold front. It doesn't hurt as much as the rain helps the late temps.

Tracker Jon