'Like a Brick' probably best describes the sink rate of a Custom Cut Tip. These were developed to meet the demands from steelhead and striper fishermen, but work for any specie where you have to get your fly deep in a hurry. These 20-foot long tips are looped at each end and may be simply looped to the end of your fly line for a 20-foot depth charge. Most anglers find that this is more than they need and make two shorter tips; such as two ten-footers or maybe an 8' and 12', or a 5' and 15' tips. The combinations are up to you, whether seeking a certain depth or a balance with a certain rod, Custom Cut Tips can help tune your fly line to your specific needs.