Here's a simple solution, ban scopes!
Everyone shoots with open sights and that will half the safety brief also.
Do away with bean bags, if you want knee protection buy a kneeling pad.
and issue everyone with a electronic score card with 3 buttons (0 - 1 - 2) your partner enters the wrong one tough $h1t.
.....i'll get ma coat....see you all at Emley if your going