RE: Just won't come in
Get rid of the Jake decoy
If you get a hen to talk to you - forget about the Tom and make that hen mad. Use your call to mimic the hen talk note for note - yelp for yelp, and cluck for cluck. She clucks - you cluck and keep it up till she stops - then you stop - once she starts again hit her again a bit harder and stop each time she does. About the third time doing this she more than likely will come find you and hopefully the Tom will be right behind her!
Match her tone.
JW