I ty most of my leaders although I don't think they are much better than store boughts. I like to wade fish with very long leaders 14-16 feet. I like to fish lakes with VERY LONG leaders 18-20 feet I fish from the drift boat with 8-10 foot and and streamer on a wet tip line with 4' of level leader I use no formula at all other than big to little and a 20 foot leader may have only 4 sizes or it may have 8 depending on what size leader I am out of. and they all work just fine (for me) and if I did it just for the money savings I would find another sport! but you will save some money if you ty your own. maybe, (in my case 10.00 a year) but I only fish 100 days a year so you guys that fish 200 would save 20.00

Rich