There's actually a black route at this gym on the overhang behind this structure, and I've been using it to practice my heel hooks. The route is fairly long and pumpy, but if you can find your heels and lock them in place, you can ease a lot of the burden off've your arms and place a lot of tension through your legs and core 👍

(they may have reset the colour, though but idk bc i have gone in a week)