In this great how-to video from Jensen Fly Fishing, Amelia Jensen demonstrates how she approaches the inside seam of a pool when she knows that there are rising fish. She explains her tackle, rigging, and fly choices and then talks about why she’s going to work her way up to the rising fish, rather than go for it right away.

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

Also look at:
https://flyfishing-blog.com/flyfishing-blog.com/2020/10/08/orvis-how-to-fish-a-seam-at-the-head-of-a-pool/
https://flyfishing-blog.com/flyfishing-blog.com/2020/10/05/orvis-how-to-fish-a-corner-pool-part-ii/
https://flyfishing-blog.com/flyfishing-blog.com/2020/09/29/orvis-how-to-fish-a-corner-pool-part-i/