Stink baits, whether chunks or the "dip" kind, are great for eating-size channel cats. Not so good for anything else or even larger channels. Cut bait or live (where legal) is best. A whole dead minnow 4-5" long is like ice cream to cats. Left-handed blue-eyed minnows are best, as our local expert jokes.
Our best rig out here is a "Flig" or floating jig. You can buy them ready-made or craft them yourself out of foam cylinders. Our local guy does them up fancy...
If you can't find a "genyoowine" Flig, just slide a foam earplug down to the hook and over the eye a bit.
Tie an appropriate weight sinker to the end of your line, then a short (6" to 18") section of heavy mono leader, then your Flig. Bait up with a perch chunk or an LHBE minnow and fish behind a drifting boat or 'yak. Or bank fish it and reel in very slowly. The Flig keeps the bait up off the bottom and offers both sight and taste appeal. Deadly.