Mr.Weiland saying i will reiterate here, “there are times fish will hit a dog turd”. Lol, love it
Of course there are times when fish are aggressive and we all caught them on purple line, pink dotted rapalas that don’t run true with a good luck chicken liver on the front treble.
It’s not the times the fish are aggressive we are looking to take an advantage of, it’s the tough times. Stealth is a huge factor when it comes to those particular times. Whether that is downsizing hooks, boat shadows, motor noise, thinner and clearer line, etc it does help to catch more fish when they are in a negative to neutral mood.
Now, high vis does aid quite a bit for visually detecting bites and more imo of just knowing where your line and therefore your presentation is at all times. You will have to way the pendulum to your specific needs for each setup.
Flourocarbon is a great leader material except on the river imo. Once it stretches it stays stretched, and the strength is greatly compromised. Mono all the way, just for ease of breakoffs and it will bounce back to form when tying on new lure.