I’m not compulsive about brain buckets but I always wear one when belaying at Churchman’s. There is so much loose choss on top!
Rock fall – I nearly got wiped out on Coercion on Bluff Knoll when there was large rockfall. The whole area between this and Hell Fire Gully (NOTE THE NAME!!) is subject to rock throwing from the summit tourists. A helmet will not save you there unless it is so big that you can crawl into it.