Stockers are a different breed...They dont behave like wild fish..For one..they tend to suspend in mid water and pick slow current like you find in hatcher raceways...Wild fish or those that have been in the water for awhile tend to hold closer to fast current. See what level they are holding in the column and fish something at their level or slightly above it. Its often easy to induce a hit by stripping a bugger or crackleback in front of them with short fast strips. Cheers.