In the fifth episode of the 11-part series, “How to Read Water,” from Jensen Fly Fishing, Dave explains how to fish around rocks in boulders, no matter where they are in a river. Understanding how water moves around rocks and what kinds of conditions trout look for are crucial.

https://www.orvis.com/fly-fishing
https://news.orvis.com/fly-fishing
http://flyfishalberta.com/jensenflyfishing/

Also look at:
http://flyfishing-blog.com/flyfishing-blog.com/2020/06/02/orvis-prospecting-for-trout-with-tom-rosenbauer/
http://flyfishing-blog.com/flyfishing-blog.com/2020/05/27/the-orvis-company-appoints-simon-perkins-president/
http://flyfishing-blog.com/flyfishing-blog.com/2020/05/26/orvis-guide-to-fly-fishing-how-to-find-trout-in-rivers-part-2/