I have fished the lower end for 30 years. If you want big spots go to the spill gate and fish the rip rap. Also , the channel where the large public ramp is between the spill gate lake and the upper large lake are is prime for large spots.. Kreture bates / soft plastics or crank baits that run around 8-12 foot are your friend there. Also the southeast end of the 411 bridge is great along the rip rap. Same baits. The islands in the lake where the spill gate is tapers down to 6-7 feet and there is a LOT of structure out from them. Stumps and trees that the cranes have crapped to death are all in the water. I've gotten many largemouths there.