We used a Flat bottom alum boat with tiller steering and a friend to drop anchor.
Looking at the damn go far right. Go SLOW, When you get close to the earthen part start toward the flood gates slowly. when the concrete starts there is a wall and the water is very shallow. Once you passed this there is an underwater rock wall it gets deeper. This is normally a big open area that we set up in and cast toward the tubulance with buck tailed jigs, bone colored stick baits and plastic swim baits.
Drive up one day and park in the parking lot and take pictures and you can see a lot of the places not to be and the other boats that are anchored.
USE A QUICK disconnect anchor rope with a buoy to mark it in case you have to chase a fish.
YEMV, go at your own risk!