Paul,
You could just add something like
"all eliminated players must place their hand on their head and promptly make their way to the dead box, if an eliminated player fails to place their hand on their head they will receive a 1-4-1 penalty.
Any live player who acts in a manner which might lead the opposition to reasonably believe they are eliminated by raising their hand above their shoulder line in a manner consistent with elimination will be treated from that point as eliminated, and will incurr all the appropriate 1-4-1 penalties if they play on/talk/fail to go to the dead box etc"
edited just to make more sense
thoughts.
You could just add something like
"all eliminated players must place their hand on their head and promptly make their way to the dead box, if an eliminated player fails to place their hand on their head they will receive a 1-4-1 penalty.
Any live player who acts in a manner which might lead the opposition to reasonably believe they are eliminated by raising their hand above their shoulder line in a manner consistent with elimination will be treated from that point as eliminated, and will incurr all the appropriate 1-4-1 penalties if they play on/talk/fail to go to the dead box etc"
edited just to make more sense
thoughts.