I've used both a jake fan and a full fan, and I haven't seen much difference in birds reactions. If they are going to commit to it they will usually come right in. Most times they will gobble a couple of times and very shortly after come at a dead run and ready to flog it. If they don't want to commit to it, a jake fan doesn't help at all in my experience. Last year I had a longbeard about 200 yards away get sight of my strutter with two hens, one feeder and one up-right, and he hauled out of there running wide open. I had a jake fan and real wing feathers on it. The tom looked to be a mature bird with a thick beard. I would have thought he would have wanted to whoop a jakes butt for strutting with two hens in his territory, but he wanted no part of the situation. With that said, I've taken 6 mature gobblers using a strutter and hens, and all but one was with a full fan.