Counting 7 on the line

[Bullycon]

In Tennessee, we count the linemen on our side of the snapper and signal to each other.

3 linemen: Fist at shoulder level.
2 linemen: Two fingers at chest.
4 linemen: Hand to face.

If your count plus the other wing's count is equal to or greater than 6, there are enough men on the line. If not, illegal formation. Both wings should have a flag.