What are you using to call them in? Depending on the weather will determine how hungry they are. I found out they became a lot more hungry after some snow has been on the ground a little while. And if you're doing it during the day, you have to make a lot of moves, and wind is always a factor. They are unbelievably smart and a lot of times will see you before you ever see them. The best way to kill them is to know where they should be coming from, get the wind in your favor and using an electronic caller. Mouth calls have never worked well for me. They really key them into your location. Using a rabbit decoy gives them something to key in on instead.