I suppose you could always try a real estate agent.  People who are trying to sell farm land, often mention the hunting value of their land in their real estate ad.  Maybe a realtor can refer you to a client.  
If you acquire a lease and the land is sold, the new buyer has to honor your lease.  This can be a plus for you and a negative point for a buyer.  Times are hard and somebody may be willing to lease to you, but if the land is valuable for hunting, it has probably been leased for years.  Give them a try.  You have nothing to loose.  Tell them you are a prospective buyer.  Sometimes land that has just been timbered and clear cut, is offered for sale.  That would be your best option.