"Look, Ben, a roller skating rink is a church - as long as some sect claims that roller skating is essential to their faith and a part of their worship.  You wouldn't even have to go that far - simply claim that roller skating served a desirable though not essential function parallel to that which religious music serves in most churches.  If you can sing to the glory of God, you can skate to the same end.  Believe me, this has all been threshed out.  There are temples in Malaya which are nothing to an outsider but boarding houses for snakes... but the same High Court rules them to be 'churches' as protects our own sects."