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.
However, the product was more than big enough for this paddler and my gear. Like some of the other reviewers, I would say that it tended to drift a little. Think that might be due to the design of the underbelly and the length of the Tuna (14'1), especially in a current.