I agree that knowing and practicing the various calls ahead of time is critical. I think it is also important to practice lining up (back paddling, drawing, quick/delayed starts, etc). No surprises on race day. I agree it is important that the paddlers know who will be making calls before, during and after a race. However, I do believe that less is more when it comes to commands from the steer. I have often told a "new" team of paddlers, that they will hear very little from me in the back, but when I make a command, they must react. Avoid any chance for confusion or lack of trust.