Well it was pretty selfish of me but I used opening day of the juvenile hunt to experiment with this very topic.
I have seen them put ground blinds up in the middle of fields and kill turkeys out of them with guns and bows.
I have seen them put TWO blinds up, one for the hunter(s) and one for the camera.
I am going to do the same thing this weekend.
Here is a breakdown of my experiment and mind you when I say field I mean a cow pasture (with cows in the area) that has grass about half an inch tall.
Absolutely no cover and the only "landmark" was a 5 foot wide stump that is about 8 inches tall.
Get to the farm and gather our "stuff".
I had on a turkey vest, ground blind on my back as well, one folding camp chair in each hand (the kind that go in the bags).
Man carried his turkey vest, my backpack and his shotgun.
We arrived at the farm about 5:30 or so, forgot to look at the time.
Walk up the hill through the woods and pop out into the field.
We walk straight through the middle of the field till we got to where I wanted to set up.
Cows were moving away from us through the field.
I set the blind up (rather noisy too) then unfold the chairs and get everything in the blind.
It is set up about 40 yards from the tree line that I feel the birds will be roosted in.
We were in the blind and set up about 6 or maybe a few minutes before.
Had several gobblers roosted within 75 yards of us.
The one he killed flew down 40 yards behind us and moved 5 yards closer to the top of the hill and at 6:40 bang flop, game over.
Zero cover, put up the blind less than an hour before the shot.
I am thinking as long as it ain't moving they don't care.
I will be doing the same set up this coming weekend, will have pictures of the blind this time.
We will see.
As for now, just get in it, make sure only windows open are in front of you with no chance to be skylined by the bird and go for it.