I have use a Willaims Warbler with hook off add swivel and 12 inches to 3 ft line add fly off your choice or worm if allowed or small hot shot. put out 100ft to 120ft and troll at 30 to 50 on mini kota motor make S turns and adjusting speeds staying in 14 to 35 ft ,, the Warbler works as a flasher just as a lake troll or Ford Fender..
use your raps/ shad works well ./speeds 40 to 60 works well and wide open will work too..
when fishing Kootenay we are trying to go 1.9 to 2.9 up to 3.9 depending on water clairity.
When using fly rod trolling full sink going to backing in 8ft to 25 using streamer to dragon fly /leaches/double shrimp/wooly buggers.. adjust speed 25 to 50 and sometimes add ripping your fly.. you can add a flatfish/hotshot etc
Floating line again go to backing same setups
Sinking tip same go to backing same setups
if you get into one fish in area go through area 3 to six time again as trout are schooling fish
Food for Thought
David