There's a real easy way to put your leader on your fly line and you don't even have to tie any knots. Your leader's got a loop in it, your fly line's got a loop in it. So what you do is you bring the fly line loop up through the center of your leader loop so it pokes through the center and then you just take your leader, and I like to take the butt section, the heavy piece, and double it over and I pass it through the fly line loop. It's easier than trying to put that skinny little end through there. And I pull it, pull it all the way through, and then all you do is pull these two things together and now you've got a very, very strong connection, nice and smooth, with no knots to tie.