From everything I'm reading, ALF has good outcomes for adults, and mewing. Other methods from people that work on adults like face pull devices work for extended hours are scarce from practicing professionals, or DIY with mixed, desputed results. The post I did about the guy in YouTube doing ALF with cross bands from his dentist did pull his maxilla forward and correct an underbite that "needed" a Lefort 1. I'm personally going to ask about this method, as it seems like crossband forces and ALF might be the key to "pulling" for long gentle periods without wearing a contraption that might be available. Check out his channel - his name is PJ Wilson...
https://www.youtube.com/pjwilsonhealthLatest ALF:
https://youtu.be/CxQJ755ZCeQI'd love to know too about any other methods that work, widely practiced, with good results and less controversy and lack of pictures like NRC and Face Pulling via belt and hockey mask... no offense if it works well, it just seems very experimental and can mess up things for this lacking experience or with complex issues... if there were more pics and detailed instructions without people getting surgery I'd love it!