Hey Tom, Pro Troll recommends voltage on the order of 0.65 for salmon, and the following: Chinook (KIng) Salmon .600 volts
Coho (Silver) Salmon .650 volts
Sockeye Salmon .750 volts
Kokanee Salmon .650 volts
Halibut .450 volts *
Laketrout (Mackinaw) .650 volts
Rainbow & Brown Trout .650 volts...