id use a 3/0 or 4/0 in the khale style hooks.


edit: for fishing live bait I like to hook them in the bone of the skull just infront to exactly lined up with the nostrols. besure not to hook behind the nostrols because you will hit the brain and kill it. another good spot is just behind the the dorsal fin about an 1/8th inch above the lateral line if you go below the lateral line then you will sever the spine paralizing the fish and hindering the performance of the bait. good luck