Guys,
Simple approach is to have everyone who wants run an alternate tire is to register as AIX and not engage with racing "true" CMC cars which are fully compliant to the class rules (running RR's or RA1's).
However, please bear in mind that TX is one of the only regions that has a healthy CMC field and if all the car "disappear" to AIX, there might be an un-expected consequence on the national level as CMC entries around the nation is struggling.