I know you canit use any fish for cut bait that you caught anywere else, but i used these whole mackeral from korean store they were cheap, and you could get two baits,6-8 in long per fish and the blues i caught were 5-8 pound fish,but i donit if it is legal anymore because of the fish virus, i donit see the ocean mackeral having that virus ,but see if you can find out,and if you can that mackeral works great