I must admit I had never heard of "cast'n drag". Thanks to Mr. Google and ten seconds of my time, I found this post from CDC:
"It's a technique where you mark structure with a marker and back off throwing your jig over letting it sink to desired depth and reeling the jig back over and across limbs to create a reaction strike."
I've been doing this for around forty years. Never knew it had a name. I just called it "fishing".
If that's what you're trying to do, there's a ton of rods that will do it. I like Loomis rods, but I'm slowly transitioning to JDM. St. Croix is also good.