Of course bolt open is the way to go however taking a practicle view on this
If you are in rough terrain /wet weather?
If with guest then I'd normaly have the rifle in a slip, or at least be in charge of the rifle, so I know the bolt is shot and whenever I carry out an action with a rifle i.e loading unloading, underloading I tell and shoow those with me what I'm doing.
The problem arrises when your say team culling i.e hinds with other stalkers
you may both be riding quads, dragging deer just stomping over ground.
familiarity breed contempt as they say, in these siuations you must keep good communication . I'm very wary who I stalk/work with because of this.
Magazines are here to inform and educate, if someone sends in a pic[no matter how big , or what agent they're advertising] if the bolt ain't open or there is any breach of best practice then it shouldn't be published!