I was leary of using the flourocarbon at first too. I always use to use 8# Stren for trolling for walleyes. After I switched my catch rate increased 29%. I keep very detailed records of each fish caught. I probably go over board but I enjoy it. Just wish the price wasn't so high.
When I first tried it I had 2 indentical poles and reels, one florocarbon and one orginal stren, same lures. The florocarbon would run deeper with less line out. Going to run some test this year with lighter test for crappies and see if catches go up.