My favorite is a Luhr Jensen Coyote 11" Paddle, with a Big Weenie Brand Poofster Fly (a white fly) 38 inches back from the paddle. Set 25 ft behind a downrigger down 70 feet or deeper.
The non-agitator paddles will occasionally change direction mid spin. You can experiment with speed to see where the action seems best. I like 2.5-3.0 mph at the ball, but I've had it work anywhere between 1.8 and 3.2 mph. Sometimes if you're going slow, the paddle will wobble back and forth. This can be killer near the bottom for lake trout.