Here in Queensland Australia stingers are not allowed in any way, bull bars as they are known here or bumpers have to be designed so that they don't push a pedestrian under the vehicle, there for any hoop on a bumper must have the hoop at an angle toward the bonnet of the vehicle, this way the pedestrian is not forced under the vehicle by the angle of the bumper. (See ARB stubby for example). Now this has been a huge debate for over 20 years because over here it is the farmers on remote properties that need big bumpers, when travelling big distances with open ranches and no fencing and cattle, kangaroos and pigs all over the place, on many occasions the animal hit ends up in the front of the car after being hit and either causing injury or death to the occupants, but the design is safe to pedestrians and other road users. Just a bit of trivia for you over there, to see the differences between countries.