The best way to fish the Trout Magnet is under an E-Z Trout Float. The slot allows you to take the float on or off and adjust the depth in seconds. The small size does not hinder the natural movement of the line and lure below. Adjust the depth so the Trout Magnet flows just above the bottom of the river bed. Keep the slack out of your line and when you see the float twitch... set the hook!