I've been told that a seagull decoy is great for confidence, and was thinking about getting one to put at 40 yds. as a distance marker. Does or has anyone used one? Also, I was told that ducks won't land over another bird, is this true, and if it is, where would I put a gull decoy. I currently have two geese floaters and I either place them close to where I'm standing on shore, or off to one side, up wind of my spread.....is this the right thing to do.