How do you add a deep end bench to a vinyl pool? I watched this video on your site: https://askthepoolguy.com/bench-across-pools-deep-end/

But don’t understand how the bench was actually built. If I am constructing my pool with steel wall panels is this bench part of the steel wall panel or do I build a cinderblock end inside the pool that the liner goes over?

Any help on how to build a deep bench in a vinyl lined pool would be great. Thank you!!