I'm not a fan of ground blinds for deer. I'm not saying they don't work, but in my area you're better off using available cover with the least amount of altering the surroundings.
Whatever you want to use for turkeys is entirely up to the individual. Turkeys are horribly stupid!!!

* Their hearing is 7x better than ours.
* Their eyesight is 10x better than ours, it's in color, plus they have 270 degree radius of sight.
* They can run 15 mph.
* They can fly 55 mph.
* They can be airborne in 3 tenths of a second.
However, they have a brain the size of a walnut operating all of this sensory perception.

In comparison, it would be like putting an average man in a F-18 and telling him to fly it. He might figure out how to start it and might even get it to move down the run way, but if he ever actually got it off of the ground, he would certainly crash.
Year after year, I'll setup a full sized ground blind, along the edge of a field and beside a woods. It wasn't there yesterday and it sticks out like a rat turd in a sugar bowl. However, there are 2 hens and a jake decoy that are only 12 yards away from the blind and even further out into the field and yet the turkeys will walk right out to the decoys from the cover and protection of the woods and get shot.

You'll never see a mature deer do that same thing, under the same circumstances.