Ive stopped messing with the tapered leader..

I just grab a spool of Maxima Mono... and works just as well..
they make it in sizes.... 2lb to over 50.

I use 6 or 8lb almost always..
but I also do alot of night fishing but even during the day.. I still catch a good number

if your going to use a size 20 (or smaller).. 2lb would work great.