7 players on the LOS

[a4caster]

We use the same mechs as JasonTx, except when we have 2, we touch the cheek (two, tooth) and four is on the chest. Tip of the cap for three, or salute. The reasoning between the two signals is if I have unbalanced, say two, then he better have four or else, here comes the flags. If we both flash two, then we only have five on the line, and they are illegal.
We also punch off the nearest receiver, i.e. outstretched fist towards backfield parallel to sideline for "off the line", usually no signal for on. I might stretch the arm lining the player up, but then drop it once he is satisfied.