Maybe go 254-style and have the CSA's and RI's hang a 20 foot pole above their heads that has a flag saying "RI"/"CSA"? </sarcasm>
In my experience, the only time I've had this happen to me was when I was still a freshman and someone asked me to find a CSA and they told me "CSAs are the guys with the orange hats" so I just went around the pits and poked people that were wearing orange hats and all of them were really confused because I didn't even know what i was looking for

(neither did I ever find one because they were all at the field)
Enforcability is an issue, though.
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