Toddr....
When you access the lower lake via the northeast boat ramp, go out about 75 yards and head west another 75 to 100 yards or so and you should be in about 40 feet of water. Use a white jig in about 1/4 to 1/2 ounce tipped with a chunk of sucker meat. Put it right on the bottom and adjust the depth when you locate fish on your sonar. Dead-stick it, and watch for the take...it's usually really very light. Hope this helps & Good Fishing!
Ski