The first time I had a shower chair fitted I slipped straight off it. The non-slip shower basin did not help as I jockeyed myself into some sort of recoverable position. That was a while ago. These days I just press the lifeline and attempt to preserve some dignity whilst awaiting the para-medics.
I fall all the time the art is falling with stile when in company,I’m still in denial even though I’m in a wheelchair most of the time,slowly getting my sense of humour back it’s one of the things ms hasn’t stolen yet