I bet you could find some here...
https://www.memphisnet.net/

I used to help an old timer commercial fish the Mississippi and rock river but by the time I started helping him he was only using trammel and hoop nets. He told me his best baits for running trot lines was coagulated cows blood and grasshoppers. He had a setup that attached to the corner of the front bumper of his truck and would drive down backroads and fill it with grasshoppers

Used to save the blood when we butchered on the farm and put on trot lines.we would hang them between 2 trees put the blood on the hooks and let dry until they were rock hard used to catch alot of catfish doing that.