If he's not on the line he's off. It's the side judge's call.
Becuase we all do canadian ball here as well, we use the canadian down indicator signals to signal across the field. I can't see 50 yards so the big signals help (just kidding). That way the other guy knows how many you have and you know how many he has. Really helps out if you have sun glaring in your eyes too.
Second down is like a touchdown signal except your fists are closed and at about shoulder height. That means you have two people on your side of center. Third down is like a delay of game signal with your arms away from your body and fists at about shoulder height. That means you have three. For four we use a fourth down signal (standard american fourth down)...more than four we just leave the field - it gets too freaky
