I guess I disagree with the majority here - that you should leave things out of your first aid kit unless everyone who could possibly find the kit is certified in the use of every item (which is silly, because you don't get certified in the use of most things you find in a FA kit, oral airways included).

An oral airway is used:
(1) when the patient can't control their own airway
(2) the patient is unconscious

People die from (1). There are different ways to control a compromised airway, but sometimes the best and easiest way is an oral airway. Depends on the situation. Positioning is easiest, but some injuries and/or transport situations do not allow you to reposition the patient.

All that being said, I don't carry oral airways when I go hiking. They are too bulky. I do carry them in my large kit that goes in the car.

If I were hiking and had real need to control a compromised airway when I might normally use an oral, I'd pull a safety pin out of my PSK, pull the tongue up, and pierce it like a "T" with the safety pin, and sit it on the lips for support. That sounds drastic but if you really have a compromised airway and can't be there to maintain it 100% of the time yourself, you have to do what you have to do. About that time I'd be kicking myself for not having an oral airway because piercing a tongue would be more prone to later complications (nerve damage and infection). But maintaining an airway comes first.

You'd have to check the local laws about oral airways. I'd be surprised if you find them mentioned, but it they are you should abide by that. Also, the scouts should be shown how to use the airways. I don't think 13 is too young myself, but you'd have to assess their maturity. 13 year old scouts aren't going to be running around without adult supervision anyway. The adults should carry the FA kits.

I understand and respect that others disagree with me on this.