This is a wonderful indicator mono for making sighters on European-nymphing leaders. It is stiff enough to transfer casting energy and highly visible on the water. I use the smaller diameters for nymphing across the stream when dipping the sighter under the water may be desired. When nymphing upstream I pick the larger diameters and grease liberally with Payette Paste. Attach a tippet ring to the end and you can use one sighter for many trips. I use the white for clear water and spooky fish and the bicolor for most typical nymphing situations. The white mono was critical to my success in the 2015 World Fly Fishing Championships on the gin clear spring creeks in Bosnia.