I would say that you might as well start making your own map. I've fished Lynnville several years and have never seen the map that you are looking for.
Your information is correct in that the lake is made up of old stripper pits. I think this area was stripped out in the fifties. The main channels are the deepest parts of the lake with the side bays being shallow. Be very careful in the side bays as you will come upon huge rocks that are just under the surface. I have no idea what the makeup of the bottom is in the deep channels but would assume that they are rocky. A few minutes with the carolina rig should give you an idea. In the shallow bays there is an abundance of grass. There is also an abumdance of 10 - 13 inch bass. Now and then you'll catch one larger but not often. I have heard about 5 & 6# fish being caught but have never seen one in the years that I have fished the lake. My best has been about 2.5#. But then I'm not the worlds greatest fisherman. The lake recieves a lot of pressure but it is fun to fish.......good luck.....