In any event where a biological male is competing as a female, every girl/woman that he/she is competing against should refuse to participate. Every match, event and race should be forfeited by the real girls/woman. If this happens across the board, it will stop. Would take maybe a month. Problem solved. If biological males want to compete, they should compete in accord with their biological sex or in a separate category of trans/nonbinary or whatever. And that’s actually a thing. My son competes in a triathlon series where they have a completely separate “nonbinary” category.