If any of my coaches/directors/sponsors had ever made me make a choice I would have ended up on a very different path. It would not have been the arts but I am a better person because I was allowed those chances to discover and participate in EVERYTHING.
Band had 7 am rehearsals, everything else happened during the day IN CLASS, (except the musical rehearsal), and sports got from 3 to 5. Musical theater rehearsals were from 6 to 10 for a month to avoid conflicts though a lot of that was actually done in theater class, choir, and the technical class for sets). We used the school day for its intended purpose. And the best actor/singer in the school that had the lead in the annual musical production ended up a 4 year starting lineman at Michigan on a full scholarship before becoming an elementary teacher.
As a 6A director, I wanted my kids in as many activities as possible and on 8th grade recruitment night had the kids wear any shirt OTHER than a band shirt to show the parents. After marching season ended I never had a student on campus more than 1 hour a week after school unless it was an activity THEY signed up for like Indoor season. After school was their time, (and yes, we'd have 30 to 40 kids a day voluntarily in the band hall), which is exactly how I wanted it.