I keep my kayak lit like a Christmas tree anytime I'm out in the low/no light. I have running lights, an anchor light, and several flashing LED lights on the boat. I still had a guy almost run me over in fog between Poe's Ridge and the Dam on Jordan. He was up on pad running way too fast for conditions. I heard him coming and paddled closer to the bank. He passed by running the opposite direction (never slowed down, or saw me, best I can tell) and was running about the same line I had been. I don't even like to think about it.
I heard a boat hit a channel buoy on Jordan one night when we were out jugging for cats.
Jim