The Knight TK2000 comes with turkey/rifle style sights. I found it very hard to line up on a moving duck. The barrel is rounded, has no groove like most shotguns and has the back sights like on a rife. I tried clay pidgins first, and started to get most of them, but it was hard to line up even on them. I took a few shots at ducks, but didn't hit any. Any thoughts on either a better way to be aiming or a replacement sight or just remove the back sight?