First, I totally agree with Bigsho69. Walking in blind can cause you to spook roosted birds. I normally give several owl hoots, if nothing responds then I switch to soft clucks. A lot of times, birds just do not respond while on the roost. This could be due to hunting pressure, being spooked, etc. Going into the woods blindly, before fly down or daylight, will normally lead to nothing good. I don't know how many times I have done this and spooked birds off the roost. At lot of times, hens and gobblers will be roosting in the same area. You may not spook the gobbler but the hens. This is just as bad.
I just returned from a hunt in south Texas. Birds were not gobbling on the roost. I owl hooted several times at the edge of a field, got no response. In fact, I heard no birds before daylight. I knew birds were in the area, so I sat up at the edge of the field with a couple hen decoys. I started off with a fly down cackel followed by some soft clucks. I had several hens respond. I then switched to a more aggressive hen yelps and cutting off the hen when possible. She responded to my calling bringing in a good two/three year old gobbler. He was following her like a puppy dog.
His beard was about 10 inches and had 1 inch spurs.