I have never tried a bleat. I know people that use them and say deer come to it.
I do occasionally use a grunt. Bucks come to it under certain conditions. I have played with young bucks I didn't intend to shoot and they passed me and turned around and came back to my stand after I grunted. I have also grunted and had does jump up and run off that I wish had stayed in the field.
I have shot a couple of nice bucks that came out of the woods looking straight at me a couple of minutes after grunting.
I usually prefer to sit in a good place quietly.