Wild Chrome
As Bob said, set the drag tight enough that it doesn't over run when you strip but light enough that a fish can run if it wants to. Once you have it set there never touch it.

Some people are to analytical about it sometimes. I prefer to just accept the fact that lots of fish are never landed and thats that. I don't a;ways need to know why ot do something different the nest time. Some fish just get off. It's best just to accept it and not give it another thought. After all you accomplished the hard part, that is getting the fish to come up and take the fly. Thats the part that takes the talent.. congrats!