Abstract: A device for at least partly immobilizing fly line includes a mat that forms a substrate and a plurality of curved nylon prongs extending upwardly from the substrate. The prongs are spaced from each other over an area of the substrate. Fly line can be pulled from a reel and allowed to randomly fall in coils in and among the spaced prongs. This prevents the fly line from moving due to transverse wind so that it can easily be cast or "shot", or the line can be released to a hooked fish, without tangling, knotting or breaking.