I've used that method for years. TFO dropped the hook keeper probably on Lefty Kreh's suggestion. He doesn't like hook keepers. They get in the way and put the hook in a bad location when your moving around. He's the one I learned the hook/fly in the guide method but with one extra twist. He went on to show me that after you have hooked the guide and set the line (around the reel seat, use the fly line/leader and wrap it wound your rod a couple of turns (without removing the line from the hook or reel seat). It will hold your line in place without slipping and keep it close to the rod, so there are no gaps to get hung up while moving around in under brush. The whole idea was to have enough line out so your leader knot would not be outside of the guides. If the knot is into the guides this can take some time to get ready when you come to your next fishing stop. (basicly a time saver...as they say, your aren't fishin' if your fly isn't in/on the water.)