Late report from sunday am. Launched @ 4:30 am and headed for the main gap. Trolled one pass through in the dark with no hits and no marks. Headed out to deeper water just outside of the floatilla, and headed north in 100 fow. Fishing was slow until about 6:30, when we started getting bit. All of our fish, save one small laker came on spoons. Seven color orange easter egg was hot, ten color uv green jeans also was active. Anything with green seemed to be the ticket. Picked up a couple kings on NBK 107 loc on dipsey. Caught a nice 4yr old king on a SWR lbb mauler spoon down 42 ft. 110ft to 120ft seemed to be the best action. Fog started rolling in around 8:00. We finished the day with my buddy saying, "I think I see Something in the water". I wish I could give more detail, but in the panic, this is the best I can do. We were in approx. 115 fow, north of the towers ( fog was so thick you could not see shore...more on that later), when we snagged into a commercial fishing net. One end appeared to be marked with a large white buoy, but the other end ( which was the end we caught with the down rigger cables on the retrieval rope) was marked with A HALF SUBMERGED, GREEN , ONE GALLON LAUNDRY DETERGENT BOTTLE ????? REALLY??? Luckily it was flat calm or we would have never seen it at all. Can't they use something more visible? Be aware if you are trolling in this area. All in all, we landed our last king in the tangle, and managed to retrieve all of our lines with the only casualty being a kinked down rigger cable. Pretty lucky I guess! This seems like a huge safety concern as there probably were over 100 boats fishing early am in the dark. As fate would have it, we decided to call it a day going 7 for 10 with 4 kings, 2 big bows, and a laker. Now lets talk fog. It got so thick, you could not see 50 feet. We came in slow and our heads on a swivel, using our electronics. All the fishing boats we saw were using common sense, going slow and deliberate. Can't say the same for a coupe pleasure boats we saw opening it up inside the break wall??? We traced the inner shoreline back to South Shore at about 7mph. The fog was worse closer to shore, at times visibility was less than 30 feet. Made it in safe and sound, but nerve racking nonetheless. Stay safe out there, and tight lines!