Does anyone know how to do this? Last night I checked my trolling speed at the lowest throttle possible; it is 2.9 - 3.0mph according to the GPS. I think I need to get down to about 1.5mph as a minimum speed for salmon trolling. BTW the motor is a 1997 Honda 90hp 4 stroke outboard. My options are trolling bags or lower the idle speed. If I can figure out how to lower the idle speed it would be a free solution. Bags are OK but would like not to have the stuff hanging off the sides of the boat. Thanks for any tips. Wanna kill these ads? We can help!