I checked the engines and some had flag holders and some just had holes where the flag holders used to be. Since I don't think the modern blue flags fit, the C&TS has probably seen little reason to reinstall them. Some of the ones I did find were on the fireman's side. In my experience the water bags are mostly hung from the flag holders, but I know from pix that they were hung in different places (including the dog house for the head brakeman).
The coal boards represent an interesting "blind spot" for me, I just never noticed them. But a rather obvious "difference".
JBWX