Anxiety doesn't necessarily cause concentration problems as its own symptom. In fact, it could be argued that anxiety actually improves concentration. Anxiety is the activation of your fight or flight system, which is meant to keep you safe from harm by ensuring you're running away or fighting without distraction.
The first set up is a standard 20-25 pound test rig (depending on the size of the tuna) with a size 1 to 2/0 hook depending on bait size and the size of the tuna. Fluorocarbon leader can be super effective if the fish are touchy (biting infrequently). This set up will be the primary bait fishing set up.
Only two (4%) of the fifty-one bluefin tuna caught on circle hooks were deep-hooked. One age-4 fish had a circle hook protruding through the lumen of the anterior stomach (Figure 4). The exposed hook point ripped tissue that supports viscera in the Figure 2. Two hook types used to catch bluefin tuna: Mustad circle hooks (left) sizes 11/0 (top) and 12/0 (bottom) and Mustad #9174 straight hooks (right) sizes 6/0 (top) and 7/0 (bottom).