I used to use the hi vis yeller but switched back to clear line. I can see it pretty good and I personally catch more with the clear line. Sme of the lakes I fish in FL are crystal clear and that's when you see a notable difference. When I fished the tannic stained lakes the hi vis worked fine though. I just got tired of respooling reels to accommodate two lakes. If I had enough money I would have reels with both types of line but unfortunately I can't afford it. So do I think it makes a difference? Yes. Does the great hi visibility outweigh the potential of spooking a few fish? Yeah, I think so. It's great for people with no so great eyesight for preventing tangles but if you don't have that problem yet stick with the clear IMO, plus it's easier to find, lol.