Approach from a position that gives the fly room to pass across the front of the cover. Start with a short cast through the nearest lane. Use a steady sequence of strips and pauses, watching both the fly and the space behind it. A pickerel may follow farther than expected before committing.
On the next cast, change the angle a little so that the fly passes another face of the same patch. One weed bed can contain several distinct ambush positions. Work the corners and openings before moving the boat or stepping along the shore.
If a fish follows, keep the fly moving under control. An abrupt lift out of the water ends the presentation, while a smooth change of direction can keep it available. There is no need to make a tight, frantic turn with a large hook beside your legs. Finish with space around the rod and a clear view of the fly.
Set with the line hand when the fish takes, then lift into pressure. If you strike at the splash before feeling the fish, you may pull the fly out of its path. Clear loose line away from the reel handle, feet and vegetation as the fight begins.