sumatra,
let me clear up a few quick things,
Obviously, you have never pinioned or seen a bird being pinioned. From what you have described in your technique, you are removing tons more flesh than any day old bird being pinioned.
The act of pinioning waterfowl is REQUIRED by the Federal Government, that or removal of a hind toe, seemless bands, or tattoos the last 2 virtually no one does on a regualr basis.
Here's how it's done, after the duckling drys off, all you do it snip the VERY TIP joint (the hand section) off, NOT half the wing. At this point, all it is a a tiny piece of skin, no bones what so ever in it. As Spectrum mentioned, they dont bleed, they dont scream, they just sit there, get snipped and return to the brooder.
Plain and simple, not a thing cruel about it, and like I said, for migratory species it is 1 of the required marking techniques for captive reared birds anyway, the other most common is the hind right toe, so one way or the other, something has to be snipped off of them.
As for the why do they have to be caught up before the molt, well, they arent all going to do it at once, and if you miss one, they will be able to fly off then.
Also, for the primaries, due to lack for flight in the molt, their molt for flight feathers is very fast so they can get back to flying, so it's essential to pen them during this time frame.
But lets all be honest, on an open 1 acre pond, you will never, NEVER catch a single one of them again, much less all of them, so permanent pinioning is the only option in this case. Even if you did get close to catching one, it would just dive at the last second and come up 100 yards away. I have kept thousands of these myself over the years, and they are hard enough to catch in a enclosed pen.
In addition, your concept of removing just a "FEW " of the primary flight feather folicals, WILL NOT stop a duck from flying, you have to get all of them on one side, even if you pinion too short, they can stil get a good lift off. So in order for your method to be successful, you would physically have to remove the entire folical section of the tip of the wing anyway. Now at a day old, how can you tell me where to cut. You have mentioned 1/4 " to 1" of removal for just a few, you'd be talking 3-5 inches for an adult bird now, so. Chill, back up, and think about what you are saying, a tiny peice of fuz, 1/8" to 3/8" long, with no bone, and virtually no muscle is all you remove on day old birds for pinioning. Can you please tell me how that's worse than what your "humane" way is?? I belive you need to experience doing this first before you get so defensive about it. From your first few post you made, it sounds like you have have never done either, but are just going off things you have been told by others.