George Harvey Slack Leader Formula
Information for slack leader purchase is here
Here is the leader formula referenced in Episode 14, February 2008. This is a modified leader formula for nymphs and dries, based on George Harvey's Slack Leader Formula.
The slack leader was designed to collapse or pile the last 1/3 of the leader for dry fly presentations. Why would one want a leader that does not straighten out? Because it allows you to get a longer drag free drift with a dry fly. If your cast lays line, leader, and fly straight out without slack, the current will immediately cause the fly to drag. These leaders out perform modern extruded leaders. They definitely are worth the extra effort or cost.
Eric Stroup showed us how he modifies this leader to include a "strike indicator" section of different colored mono. This means that you have one leader that is perfect for short line nymphing and dry fly presentations. All you have to do is change your tippet section. I use this leader for 80% of my Trout fishing. The only time I do not use this leader is when I am throwing big flies like mice, articulated streamers, huge terrestrials or drakes.