this might upset some laker fishermen....but its my best thought...and experience...until the lake you are fishing rolls over...forget about trolling....you will get the occassional strike and fish....at this time of the year they will chase forage in shallower waters.....if you cast towards shore and they are around....you will get them...the best way is to deadbait from shore and be patient.....10-30 ft max will produce the best and take this special time of the year to enjoy it....because soon....they will be hitting deeper water....grump