No telling how many ducks my hunters or I "stoned" then led my dogs on long tracks or lost them entirely in deep water, but breaking an upper wing bone will often leave a bird that falls from the air like a rock with its running and swimming gear intact and highly motivated. "Best practice" for a dogless hunter is as you've described for doves, and will still result in the occasional lost bird under all but park-like conditions. Just part of it - at least if you're shooting very many. But Fowler is right: nothing in nature goes to waste. (Unless, of course, man finds a way to turn it to Styrofoam.) And something out there needs that bird a lot worse than you do.