Trolling for trout, best for me is Berkley metallic perch plug, deep diver 10' version, ReefRunner 4" in silver/black, Norman ?? 2'-5' model in red craw, flatfish/kwikfish in skunk and yellow/black-spot, Magwart black silver speckles. Follow the contours. On the top, very slow speed dragging a 6" black bluetail or pumpkin yellowtail powerbait worm.
Sitting around or controlled-drifting, 1/8oz white jighead with (Powerbait or Nitro) trout worm in blood red, worked up & down the water column very slow mini-jerks. Work this very slowly like a chironomid. Alternate is small 1/16-1/8 oz bullet weight painted white or glow-white, bit of white powerbait for a head, same troutworm on size 8 hook. Same action. You could use a natural or black worm but the head has to be white.
For this, you most often can't feel the take so your rod needs to show the slightest moves even for 4# fish. I use long graphite crappie rods, an old 9' glass Browning noodle rod and an EagleClaw UL 4'6" glass rod for these, depending on the reel & line I want to use. The tips show everything going on down there without spooking the fish with resistance.
A centerpin rod would work well for this if it isn't too long for comfort & landing a fish in your boat.
This setup works well on kokanee too.
Good Luck!