Thats pretty much all i do is field hunt. If you know Turkey's are frequenting the area use a couple of decoys,call sporatically,and a whole lot of patience usually works for me.
Also don't think that if they arent gobbling it's pointless. You can go from feeling that way to toting a gobbler out within a blink of an eye hunting fields. Alot of times they hear your call,will come in at the pace they want to, and will slip in silent. Patience and persistence....Goodluck....