Clear intermediate sinking, or “slime lines” are an extremely versatile fly line that I believe don’t receive the recognition they deserve. What these lines are is a full sinking line that simply falls at a very controlled rate of 0.5-2 inches per second. They don’t hang up in shallow water, they’re very useful in fishing sub-surface and best of all they’re totally clear. Here’s my 5 favourite applications:
1) Scuds & Ledges – Freshwater shrimp are a huge part of a trout’s diet, they are the Big Mac of the underwater world and there’s a reason that lakes holding massive rainbows will typically have a large scud population. What I will do with my clear intermediate line is find a ledge or a dropoff and anchor parallel to it. If I can’t visually distinguish it, I’ll use my depth sounder to tell me right where the transition is. From here, I will cast along the drop off or slightly over it onto the deep side. With a quite erratic twitch retrieve I will bring the shrimp back to the boat with the occasional pause to allow my fly to fall. Takes are usually quite savage.