I use the choppers, usually in high burn, 5-5 1/2″ lengths, cut from full length feathers. This usually allows me the options of a main feather, and a flu-flu feather or a smaller 3″ or 4″ from one full length feather. There are right and left wing choppers, however, in a pinch, one can use either for either wing by reversing the feather – just takes more caution when using the opposite of the intended use. The full length feather also allows me the option to make splices from which to chop out the desired feather shape. Although I use both shield and parabolic shapes, I have noticed more noise when shooting the shield cuts and I am really starting to like the Pope and Young chopper shape.