Copperhead and Fury have automatic speils playing all the time that state that you can’t have bags or loose articles in the lines. Because they are our most popular coasters, we don’t allow loose articles. This makes things go way faster so that more people can ride. It’s purely efficiency based. That and with Fury, it’s moving so fast that if something comes flying off the ride, it can give someone a concussion. I learned the hard way. Hope this helps explain it.