If we have any concerns about guest in our town , we do a ring around to inform all other accommodation providers of any problems that we have had.
When a guest or guest's do the wrong thing they usually move to the next town .
What we could don this site, is to notify all participants of the vehicle rego number, and some detail of what had been their experience.
If the guest is say from Victoria ( registration plates) and plays up here in Narooma, there is every chance they are heading home , so all participants south of us would be aware and take the necessary action.
One of the advantages of chain membership is bad guest notifications.
We as non chain providers,we could do something like that on this site.