DROP BACK INDICATOR
a device to detect a hooked fish swimming towards the angler - normally the line goes slack and the movement cannot be detected. The indicator can be electronic with a beeping alarm or a simple clip. The indicator is positioned on the rear bank stick and a free hanging open clip is hooked onto the line between the reel and the first rod guide. A fish swimming away from the angler pulls the clip up while one swimming towards the angler will cause the clip to drop down