I could be way wrong here,but I build my own using a 3' section of 12lb. as a butt section then 3' of 8lb. then 2' of 6lb then tippet. From personal experience I don't drop more than 4lbs. between sections. I've tried furled leaders ,but have had real problems with knots(It's probably my weak casting stroke and not the leaders fault). I hope this helps.