I have no idea what the secret in the book is, but catching channels isn't difficult at all.
Main line - Braid, I run 65 or 80lb power pro...I don't see any reason to go light here. Make sure it's heavier than your leader. Learn to tie the palomar knot, use that for main line to swivel.
Weight - No Roll sinkers - I carry 1oz, 2oz, 3oz, 6oz, and 8oz - depending on how swift the current is where I'm fishing. This gets put on your main line above the swivel.
Swivel - I use 100+ lb swivels mainly because I am going after large catfish...but I would prefer too heavy over too light.
Leader - 50lb Berkley Big Game. I tie
this to the swivel, and snell the hook.
Hook - Gamakatsu octopus circle hook. 3/0 for up to 5lbs or eater catfish, 6/0 for 6-20ish, and 8/0 for larger stuff. 10/0 Mustad circle hooks if you're going after the really big blues or flatheads.
I couldn't find a video on youtube for the type of snell that I tie...I learned it from my FIL who learned it from a deckhand in the Gulf. Fantastically easy way to snell a hook. Pretty much any snell will be fine. Snelling these circle hooks lets the hook rotate and work properly.
You don't set the hook with circle hooks. They're designed to hook the corner of the mouth as the fish is turning and swimming away with the bait in it's mouth. Use solid rod holders. Let the rod bend for 2 good seconds, then reel down. Once you know the fish is hooked, pull the rod out of the holder and fight the fish. Don't get impatient with circle hooks, let them do the work.
Get local bait, if they're feeding on shad, use that. Bluegills, use that. Catch it, and cut it into hunks sized to the size of catfish you are targeting. You can catch big catfish on small bait...however, you'll have to fight off the smaller fish to get them. If you fish with bigger bait, you weed out the little ones that cant fit in their mouth. Any river around here, with small hunks of bluegill cut bait on a 3/0 circle hook, you can catch 2-5lb channels pretty much constantly.
Friend and I won the local cat fishing tournament this weekend using this equipment.