I think a blind guy facing the other direction can pass it .... I've never had a student fail
Y'know, FWIW, I've actually tried it with both eyes closed and been able to shoot passing range qualification scores. The 3ft, 9ft, and 15ft distances go pretty well; 21ft gets dicier.
Did it just to be able to tell worried Concealed Handgun Class students that the range qualification portion of the course is quite doable. And not to worry.
With some 400+ students now past the portals, I've likewise never had a student fail the range qualification portion. Had one person shoot a 70 once, which--of course--is still minimum passing.
Now---I've had some wild, weird, and wooly things occur at the range during the qualification portion.
And so has every other CHP instructor that I've talked to.