Fog is bad, my father and I were fishing a bass tournament out of Hickory Knob with thick fog and I was just trying to idle straight across to a spot that I like. Well, after the third right hand 360 where we ended up at the mouth of the creek at the ramp, we gave up and just started fishing until the fog burned off. The kicker was that I would sit in the front of the boat to make sure he was keeping the motor straight......didn't work.