Geez, now I'm getting nostalgic for the old Cortland 2 piece leaders. They had a 5 and 1/2' tapered stiff nylon butt that stayed on the fly line more or less forever. When the season opened you attached a 4 and 1/2'limp nylon tapered tipsection down to 3x or 4x and adjusted the tippets throughout the season as needed. If the tip section got a little short, you replaced it and started over. The leader came with "twin tips," which gave it it's name. Unfortunately they lasted so long that Cortland couldn't make any money on them so they were discontinued. I always thought they were the greatest leaders ever made. Planned obsolescence, no?