Lanier can be a tough nut to crack, but there are a few things you can do to make it easier. You've probably noticed that there are a couple key techniques that you need to add to your repertoire. Also, you've got to understand, and trust, your electronics. After that it's pretty much down to finding them. Don't try to take the lake on as a whole, either. Focus on one or two major creeks and break them down.
Then again, you could also take my approach; put out a big spread of live bait, and haul water until you bonk a couple in the head. That seems to work fairly all right.