Channels bite all year long, albeit a bit slower in colder months, and cut bait is arguably the best bait you can use all around (proper presentation, and type of fish used are debatable and there’s a lot of articles about the internet with different opinions.) I’ve often read people say smaller sized pieces go farther in colder waters.
I generally start down stream, throw the bait out, give it 20-30 minutes, move upstream a bit (not too far, you want to make a scent trail for any that are hunting your original bait) and then toss out fresh cuts.. Repeat until you find them or they find you..
Channels hunt mostly by scent, and they’ll often come a long distance if they smell something intriguing up river.
I’m sure some of the vets here will have more to add!