If you want to keep from driving yourself crazy “fixing” the rules to keep up with how people get around them, stop trying.
Boundaries are not there just to be boundaries. They are there to serve as warnings of potential harm to come. Let the consequence of the boundary-crossing be whatever that harm is, not some malum prohibitum tome of penalties completely unrelated to the reason the boundary is there.
You can’t protect the snowflakes forever; they have to grow up sometime. Healing up from self-inflicted bruises is a necessary part of that.