Fished Muskegon 7/30, straight out. At 100 FOW, 50 degree water was below 90' so started in 200 FOW, went SW to about 250 FOW, turned inside and proceeded in an s-pattern in a NE direction until we pulled lines in 80 FOW after 10:00PM. In all, probably ended up 1.5 miles south and north of the pier. Black Killer on rigger between 130 and 90 down. Glo Blue Dolphin on rigger between 75 and 55 down. NBK on rigger between 55 and 35. Blue-Green Howie Fly behind NBK E-Chip ProTroll on dipsey with ring, started at 225' back and ended up 150 back at sunset. A Chicken Wing Mi Stinger on another dipsey 175-140 feet back. Carmel Dolphin on 8 color core and Dang on the 5 color core. According to the sub troll, temp wasn't below 50 until it was deeper than 90 feet. Speed trolling 2.75-3.0. Not one release. Now I know a tournament was going on, so don't know how much faith to place in radio chatter, but it sounds like fish were in 45-90 FOW and 3 miles north? That temp ranged between 60 and 75 degrees, at least where I was. At a loss.