I carry 2 pieces of 2 x 2 that fit across the top of the shower. She will use 1 or both depending on the number of hangers. Staggering them if both. A hanger will fit over a 2 x 2 and it won't roll around when in place.
Bob & Lynn
2 Chihuahua's, Ella, Gracie
was-2013 Open Range 424RLS,06' Chevy 3500, dually, Duramax/Allison
also was - 2015 Winnebago Adventurer 37F, towing 2003 Jeep Wrangler
now - 2021 NoBo 19.5, 2019 Honda Ridgeline RTL (Talk about downsizing!)