I think of the ho as head on at the first merge. When dogfighting someone and angles line up for a frontal shot I will take it. You have to be aggressive and kill quickly or you are fodder for his Friends as you try to get an "approved" shot. It may be different if you are alone in the sky with one enemy and want to prolong the dance.
I've had a FEW that group PMed me for killing a mate who hoed at every opportunity. Well my leaking, smoking, broken plane still was deadly fool.
Many cry Ho in disapproval of being killed thinking their nose is off limits to attack.