I am working on fishing near a coal power plant, so the water is still cold but not freezing. would a wacky rigged senko bring success in this situation and if not that, then what would

Unfortunately i think there is gonna be a lot more that's gonna come into the equation. Try to locate them by spinnerbait than zoom in. Thats the best i could give ya with what is supplied.

if i could locate them, would a wacky rig be successful in the cold..

depends on the forage...and water clarity, id try a jig once ive found them, then you can vary your presentation.

I only do well with wacky rigged Trick worms, finesse worms, and Senko's when the water temp is above 43 degrees

I'd try a jig!