I caught plenty in the late '60 and '70s with Jolly Green Giant whole kernal corn on a plain old hook and a big nut for a sinker.
Sears fiberglass rod and reel.
Sometimes, Id get fancy and drive a 16D nail into acan ofcorn a half dozen times and toss it in a hole then fish it.
Chum.
Ignored carp until 3 years ago.
Got back into.it.
Haven't gotten TOO fancy, but did go to this rig.
https://www.amazon.com/gp/aw/d/B071KL7KN5/ref=ox_sc_saved_image_4?smid=&psc=1I cut off all but 2 hooks.
Single piece of corn on each hook, then ball.of bait/Chum packed on spring.
I use sweet corn + juice, Panko crumbs, and strawberry Jello mix.
I fish tidal water, so need to reboot often, but it WORKS.
Then again, I catch alot on nightcrawlers on a plain hook, esp.after a heavy rain.
Check out Catfish and Carp on YouTube, he's s GOOD.