When no fish are rising and you can’t see them actively feeding below the surface, you don’t really have many clues about what tactics will work best. So you guess and hope for the best. But sometimes, the trout will tell you what tactics you should be using. When that happens, it pays to listen.

Website: www.orvis.com.

Also look at:
http://flyfishing-blog.com/flyfishing-blog.com/2019/08/04/orvis-how-to-prolong-your-nymph-drift-downstream/
http://flyfishing-blog.com/flyfishing-blog.com/2019/06/10/new-orvis-tactical-nymph-leader/
http://flyfishing-blog.com/flyfishing-blog.com/2019/06/05/orvis-clearwater-nymph-set/