Some thoughts:
1) NAPM/Do not attend isn’t a viable protest. Not enough will do it, the vocal majority are already doing it. There’s been fans surveyed and then response is “don’t tell us what we can’t do”. It will cause division and make us look weak.
2) Stopping games will work, but will need hundreds of people committed. Anything less and the fans that do commit are at risk of a criminal record. How committed are you?
3) Any official protest needs someone to lead and be responsible for it. If something happens at that protest and all reasonable precautions where not taken, the organiser is partly responsible and stood up in court with their job, home and family on the line. Are you willing to have your name on the list as the organiser?