It's good to acknowledge this can be tough on the scouts, especially the SPL. We had a nonfunctional SM for three years who used to brag the troop was boy led, but it was because he did nothing. He had some kind of a passive aggressive personality disorder that made him impossible for adults to work with, let alone kids. For two of his years we had good SPLs who did their best to run the troop. It was hard for them though to up manage an adult they were supposed to respect and hard because they were high school kids in AP courses, in the middle of college searches, involved in other activities