I use about 8# of Tyger steel leader (black) and a circle hook on one tipup and 20# flouro leader with a circle hook on the other. It has always seemed like I get more flags on the the flouro leader and with the circle hook, 75% of the hooksets are in the corner of the mouth, as advertised. The other 25% usually results in needing to retie, since flouro seems to nick real easy.