Where do I find the catfish in my local lakes?

[cecho]

I haven't figured out the catfish yet, but I've been catching plenty of drum, white bass and walleye on live minnows on drop offs and humps between 6 and 15 feet deep. I'd like to keep a second pole always in the water with heavy duty line, a large circle hook and a large chunk of bait while I'm drifting the humps and drop offs with minnows. Any ideas on what size tackle and what kind of bait I should use for this second "shark" pole?
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