Guys up here catch them numerous ways, easiest is to use a crawler harness, such as a Lindy, I make my own. We use walking sinkers bewteen 1/2 and 1 1/2 oz. Do not use a whole crawler, just a piece, and start trolling around 1pmh and vary till you fnd the speed they want. Blade colors vary depending on light penetration. Here at Lake Marburg in PA, chartreuse and silver are the standards but orange and gold have their days. Blade size varies as well, but the most consistent producers are size 1 and 2 Indiana blades. The 1 1/2 weight seemed to produce last year best because the harness would get through the school before the motor was spooking some of the fish being straight down below the boat. Some river guides have switched to fishing for white perch in the summer since the smallmouth fishing has degraded so much in the last couple of years. They will fill coolers on a regular basis. I fish for them 2-4 times a year when the kids want to get out and just catch fish after fish. Mind you these tactics are for sping, summer, and fall. The fish we catch are from 6-12". We also get walleye, largemouth, yellow perch, and bluegills this way. Most times we will be fishing suspended fish over 40-80 feet of water. Guys also vertical jig but I havent had the success with that has trolling has given me. Hope that helps, good luck.