Don't take this personally but from the pictures of your blind and dog box, it's definitely flaring birds. It looks like a skyscraper on a levee. My buddy took the bottom part of a crate, sunk it next to the blind and the dog lays down in it. Throw some grass over and around him and he's hidden quite well. Here's a pic
A barrel would serve the same purpose. I can get you a plastic drum and you can cut it in half.