I guess this may be more of a technique, but anyway, last winter we were lake trout fishing Clearwater, the pas. Had white tubes on the rods, and were throwing some chum down the holes. Kept getting marks on flasher but they were not really paying attention to our bait. We were in 25 fow and with the lake so clear could see bottom easy, I noticed all the chum was gone. That was our marks, them coming and taking chum sitting on bottom! So I rigged up a quick strike with a smelt, and let it sit right on bottom, wasn't even 20seconds and had one on, changed the other holes to the same and did really well for a while. Biggest was 36 inch, So the go to for that day was quick strike and a smelt!