Why would you possibly need three intermediate sink rates is a question the un-initiated often ask. In Stillwater, finding the fishes feeding level is one of the critical factors in successfully outwitting our target. The ability to keep a fly at the fishes feeding level for longer during each retrieve just elevates your chances of success. On slow retrieves this is even more critical, throw in a couple of fly grabbing weed beds for good measure & the ability to hang your fly above them without snagging the cabbage is a godsend. Airflo's new line marker system helps you fish with even more finesse in this invisible subsurface world.