I have only ever seen 3 grass carp caught on hook
and line and all were on the same day about 25 years now! (Man, I am getting old!!)
We were using catalpa worms, which are predominantly green with yellow and black stripes, and we caught everything in the lake that day, mostly big catfish. There were three of us fishing at Pleasant Creek near CR. The one I caught had to be somewhere around 20 pounds, it took me about 45 minutes to land it, it was a rush.
I believe that catalpa worms are only available somewhere around Labor Day each year. We got them off of, what else, catalpa trees that we knew about. I think those got bulldozed a fwe years later if I remember and I have never fished with them since, but man oh man, nothing compared to those days with those worms!!!