[JRutledge]

If it is obvious, the lead might not be watching the ball going out of bounds. Now a touching the line or ball hitting the sideline will be the lead's call, but the ball clearly going out of bounds where it hits a wall or goes into the stands, the Trail might be on ball and obviously tell who put the ball out of bounds. You have to work together. I think the Trail should blow the whistle if the ball clearly goes out of bounds, but look to the Lead for help. It is a huge flaw in the mechanics already so there is no perfect way to handle this either way.

Peace