It's not ethical to make an animal suffer due to bad judgment, we all have to learn though. I've seen some guys hit everything with a bow speeding along on a horse with nothing but their knees holding them on. Telling them they aren't ethical is pure rubbish. If you can make the shot well then go for it. I practice shots I expect to make, I never practice that one so I'd pass on the shot, but I haven't needed to take that shot either.