it does a bit. though It seems to me that they were using a very stiff 4lb nylon, a limper type of nylon hanging straight down would be less visible. personally I haven’t any good experiences when I’ve used fluorocarbon.
Yeah I used to use Flourocrabon mainline but had major issues with tangles so now use braid with a flourocarbon leader unless in crystal clear water, Still seem to get more hits than my mate Who just uses mono mainline.