Yeah thats the sonar type. 6’8 ML F spinning rod for 1/4 blades. 7’ M F for 1/2. The key to those is a slow and steady rise, a baitcaster will overwork the bait and you will get nothing but reaction strikes. Took me a good month to learn them this spring, it is a lot harder than it seems. First 2 weeks all I did was snag fish all day long, once I got the hang of it I started catching them. You wouldn’t believe how hard fish hit those things when worked properly. The biggest mistake I made was the wrong rod/line choice. I started with a 7’M baitcaster and ended up with a 6’8 ML F spinning rod and 10# braid.
I’m going to purchase a rod specifically for blades here in a few weeks. 6’8 M F croix.
I was fishing them for walleye, largemouth, and white bass.