I don't have a problem making flying geese, but it depends on the pattern how I assemble them. Flip and stitch if I can make at least a 1" square from the cutaway. Latest method is the 4 @ a time, which is super efficient - a good thing bc I needed 456 for the latest. I actually ended up doing more than that, bc the book has an error in color placement. They do have a work around, but being a little OCD, I couldn't handle it. So I set aside the 216 I had with the wrong placement and redid them. Sooner or later, those little buggers (finish @ 1" x 3") will be used for something. Probably a border. Or possibly sides on stars?
I've also got and have used the Wing Clipper; it was required for a class. It does make perfect geese, but that is a real waste of fabric as you are intentionally making them over sized and trimming down.
For squaring FG, I highly recommend the Bloc Loc rulers. Pricey, but so helpful!