The only thing I could think to do is to keep scouting and take note of when the rut starts. Once it gets going start rattling. You will be surprised on how a good rattle will get the big boys moving. Another suggestions is to put out mineral blocks, that is if it is legal and if the area you hunt doesnt have natural salt sources around. If you choose to put out licks you need to do it in a hurry.

Good luck.