Haven't fished the area myself, but I am sure some members will be along to help out. In the meantime, I would go here:
http://www.uscg.mil/d8/mso/louisville/rivercharts.htm
and download the river charts for the area you are looking to fish.
Start with creek mouths, the old wicket dam sites, curves and bends, you can't find the underwater structure without sonar, but you can find the right spots to try just using the maps and observing the water and currents.
Good Luck,
http://www.uscg.mil/d8/mso/louisville/rivercharts.htm
and download the river charts for the area you are looking to fish.
Start with creek mouths, the old wicket dam sites, curves and bends, you can't find the underwater structure without sonar, but you can find the right spots to try just using the maps and observing the water and currents.
Good Luck,