The one time manager of the Ponoi river lodge, Mariush, described a system so simple it is hard to believe.
The leader consists of about 12' of 12# chamelion Maxima with a perfection loop at one end. It is attatched to the line by tying an overhand knot in the fly line and looping the leader behind it with a girth hitch!
Mariush assured me the this was strong enough and proven by hundreds of customers.
The leader rolls the fly right out(if you can cast like he can).
Here's to keeping it simple.