I had 2 occasions where the Jake-Mobile kinda spooked birds, I got one and the other wouldn't come in. I had the fan up and was using the fan supplied. Now I have the fan holder and made my own jake fan.
B/C of this I will always make the Jake-Mobile look like the DSD jake with the tail straight back in a less dominant pose.
I like decoys as they give the turkeys something to look at that is not me. Also, I haven't had them hurt a set up, hens anyway, and will continue to use them. I think a single hen is called for in just almost any situation. Just personal preference. I have had instances where turkeys come looking for that hen and when they don't see her they go away and never get close enough for a shot.