I am completly opposed to Air-conditions propagandized as a solution to climate change. What is the wright approach to combating this state of temporary relief except from old-fashioned fans? Don’t get me wrong. They do the job for me. I am reffering to finding a solution for people more with health issues or large facilities that are in need of something more drastic.
Hops need LOTS of dirt for roots, water, and something to climb. I live in Zone 6a but our summers peak at 35°C so they might be more viable than you think.
If you do them in raised bed you 100% cannot have a sealed bottom.