The drop-off from a gravel shelf into a pool is a great place to find trout when water levels rise. In this great episode of “Master Class Monday,” Dave Jensen walks you his processes for rigging, casting, and presenting flies in these situations. Pay specific attention to his mending advice.
https://www.orvis.com/
https://www.orvis.com/fly-fishing
http://flyfishalberta.com/jensenflyfishing/
Also look at:
http://flyfishing-blog.com/flyfishing-blog.com/2020/10/16/orvis-how-to-fish-up-to-a-rising-trout/
http://flyfishing-blog.com/flyfishing-blog.com/2020/10/08/orvis-how-to-fish-a-seam-at-the-head-of-a-pool/
http://flyfishing-blog.com/flyfishing-blog.com/2020/10/05/orvis-how-to-fish-a-corner-pool-part-ii/