Yes there are marked lanes. Very easy to get around on the lake. If you go close to or above the bridge be careful. Lots of stumps and most will all be just under the surface with all this water.
Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in sideways with a fishing rod in one hand, 10# LMB in the other, thoroughly used up, totally worn out, and yelling "Wow! What a Ride!