that might be from human perspective, no one really knows what it looks like from a fish's perspective as no one is a fish. lol
i used to use hi vis until tested on the bank. while every one els was catching fish, i wasnt and couldnt understand why. we were using the same rigs and same baits and both fishing structure, the fish were there but not picking up my bait. so there for we took one of his lines and dropped it by my spot and drop one of my lines by his spot and he continued to catch fish after fish, while i only managed one fish. fro the two days he had caught 12 fish and i only managed one fish.
its not a sientific test but it showed with out a doubt that you can improve your catch rate by making your rigs and line blend in. thats why i say stay away fromhi vis.
but each to his own